Re: [Qgis-user] Install Postgresql and Postgis
Thanks all, I've now managed to install Postgres and Postgis. I haven't managed to set it up yet, but that's another story and I'm working on it. Regards, Nick. -- Sent from: http://osgeo-org.1560.x6.nabble.com/QGIS-User-f4125267.html ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Install Postgresql and Postgis
It's from the Training Manual Richard: https://docs.qgis.org/2.14/en/docs/training_manual/spatial_databases/spatial_functions.html Apologies if there is something more recent, if there is I couldn't find it. Regards, Nick. -- Sent from: http://osgeo-org.1560.x6.nabble.com/QGIS-User-f4125267.html ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] Install Postgresql and Postgis
Ubuntu 20.04, QGIS 3.16.3. I'm having problems installing Postgres and Postgis, the most recent version of the manual I can find says: $ sudo apt install postgis $ sudo apt install postgresql-9.1-postgis This doesn't work any more, Postgis installs but Postgres doesn't, I think the relevant file is missing from the repository. I'm stuck here, can anyone help? Regards, Nick. -- Sent from: http://osgeo-org.1560.x6.nabble.com/QGIS-User-f4125267.html ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] How do I clean up this geometry?
Suggest you add a 1m buffer, dissolve the output and then buffer it using a value of -1. Regards, Nick. -- Sent from: http://osgeo-org.1560.x6.nabble.com/QGIS-User-f4125267.html ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] QGIS and SAGA 7.3.0
This worked Rien, many thanks. Thanks too to berndv and to all who helped with suggestions and advice, the QGIS project and its community really are remarkable. Cheers, Nick. -- Sent from: http://osgeo-org.1560.x6.nabble.com/QGIS-User-f4125267.html ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] QGIS and SAGA 7.3.0
Hi berndv,
I thought we might be getting somewhere with your last suggestion, I made
the changes you mentioned and the SAGA NextGen tools duly appeared. I then
tried to run the SAGA Simple filter on a one-metre DTM, but this failed with
the message 'Unknown option 'MODE''. This is a step forward of course, I'd
not managed QGIS/NexGen to recognise SAGA at all before this. Here's part of
the output from the log:
=
2020-10-18T19:22:34 INFOSAGA execution commands
io_gdal 0 -TRANSFORM 1 -RESAMPLING 3 -GRIDS
"/tmp/processing_LzwXIT/b240a8bf0bac43518ec759524cb8b9d0/DTMSU5565P107172019012320190325.sgrd"
-FILES
"/home/nick/Desktop/bucklebury_common/P_10717/DTM_SU5565_P_10717_20190123_20190325.tif"
grid_filter "Simple Filter" -INPUT
"/tmp/processing_LzwXIT/b240a8bf0bac43518ec759524cb8b9d0/DTMSU5565P107172019012320190325.sgrd"
-MODE 0 -METHOD 0 -RADIUS 25 -RESULT
"/tmp/processing_LzwXIT/a2d7f23262044c1faa1105e743070c85/RESULT.sdat"
2020-10-18T19:22:36 INFOSAGA execution console output
# ## # ##
### ### ## ###
### # ## ## # ##
### # ## # #
# # ## # # ##
SAGA Version: 7.3.0
library path: /usr/lib/x86_64-linux-gnu/saga/
library name: libio_gdal
library : io_gdal
tool : Import Raster
identifier : 0
author : O.Conrad (c) 2007 (A.Ringeler)
processors : 12 [12]
Parameters
Grids: No objects
Files:
"/home/nick/Desktop/bucklebury_common/P_10717/DTM_SU5565_P_10717_20190123_20190325.tif"
Multiple Bands Output: automatic
Select from Multiple Bands:
Transformation: true
Resampling: B-Spline Interpolation
loading:
/home/nick/Desktop/bucklebury_common/P_10717/DTM_SU5565_P_10717_20190123_20190325.tif
Driver: GTiff
Bands: 1
Rows: 5000
Columns: 5000
loading: DTM_SU5565_P_10717_20190123_20190325
# ## # ##
### ### ## ###
### # ## ## # ##
### # ## # #
# # ## # # ##
SAGA Version: 7.3.0
Unknown option 'MODE'
library path: /usr/lib/x86_64-linux-gnu/saga/
library name: libgrid_filter
library : grid_filter
tool : Simple Filter
identifier : 0
author : O.Conrad (c) 2003
processors : 12 [12]
=
I'm not entirely sure where I go from here!
All the best,
Nick.
--
Sent from: http://osgeo-org.1560.x6.nabble.com/QGIS-User-f4125267.html
___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] QGIS and SAGA 7.3.0
The SAGA NexGen plugin is flagged as 'Experimental', which I think means 'it may not work for you' - this is fair enough. I see that SAGA 2.2.5 is still in the repository so I think I'll do away with Version 7.3.0 in the short term and fall back on the older version, calling it from the Processing Toolbox as I used to. Many thanks for the suggestions, I'm always amazed at how helpful people are. All the best, Nick. -- Sent from: http://osgeo-org.1560.x6.nabble.com/QGIS-User-f4125267.html ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] QGIS and SAGA 7.3.0
Thanks for this, berndv. In the 'provider.py' file for SAGA NextGen I have tried changing the required version to 7.3 but this doesn't make any difference. I think it's probable that the plugin really does need a valid 'SAGA folder' to be set - and it's this that's got me stumped at present. All suggestions welcome! All the best, Nick. -- Sent from: http://osgeo-org.1560.x6.nabble.com/QGIS-User-f4125267.html ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] QGIS and SAGA 7.3.0
Ubuntu 20.04, QGIS 3.14.16, SAGA 7.3.0 In QGIS I lean quite heavily on SAGA algorithms, which worked fine until I upgraded to Ubuntu 20.04 (focal). This forced an upgrade of SAGA to Version 7.3.0. Trying to use this from the Processing Toolbox resulted in a warning and problems, so I installed the SAGA NextGen Provider, in the hope that this would fix them. It hasn't, but I'm far from sure that I've set the required 'SAGA folder' correctly. It would be helpful if someone could tell me what this should be, or how to find out what it should be. I think SAGA 7.3.0 is correctly installed, is starts correctly with 'saga_gui' from a command line. Best wishes, Nick. -- Sent from: http://osgeo-org.1560.x6.nabble.com/QGIS-User-f4125267.html ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] QGIS 3.14.15 on Ubuntu
And so it has, many thanks Andrea; thanks too to the QGIS team. Cheers, Nick. -- Sent from: http://osgeo-org.1560.x6.nabble.com/QGIS-User-f4125267.html ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] QGIS 3.14.15 on Ubuntu
Every time I start QGIS 3.14 it tells me that a new version is available, 3.14.15. I'm using Ubuntu 18.04 and my QGIS repository is "https://qgis.org/ubuntu bionic InRelease" and there doesn't appear to be any sign of version 3.14.15 there yet. Is this just for me or for everyone? This isn't a complaint by the way, I did a fresh install on a new computer a month or so ago using the new installation method and I just wanted to check that it will update as it used to. Best, Nick. -- Sent from: http://osgeo-org.1560.x6.nabble.com/QGIS-User-f4125267.html ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] changing .gsb file for transformation
Bump. I'd like to know the answer to this as well. -- Sent from: http://osgeo-org.1560.x6.nabble.com/QGIS-User-f4125267.html ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] “…can’t be opened because Apple cannot check it for malicious software”
Hi dsucher, I think you need to start a new thread for this, there are people here who know about problems with QGIS on a Mac but they probably won't look at this thread. N. -- Sent from: http://osgeo-org.1560.x6.nabble.com/QGIS-User-f4125267.html ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] gdal2tiles not included in QGIS 3.10.2
Thanks to all. In fact I was missing 'gdal-bin' - I've installed it now and things appear to be working as they should. Strange that it wasn't included in the QGIS installation though. I installed QGIS as directed on the Downloads page: sudo apt-get update sudo apt-get install qgis qgis-plugin-grass Regards, N. -- Sent from: http://osgeo-org.1560.x6.nabble.com/QGIS-User-f4125267.html ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] gdal2tiles not included in QGIS 3.10.2
In the last couple of days I have done a clean install of Ubuntu 18.04.4 LTS, followed by an install of QGIS version 3.10.2. I now find that when I try to use gdal2tiles either from the Toolbox or from a terminal I get the message "command not found". Thus, it would appear that gdal2tiles was not installed as part of the QGIS installation. Should I report this as a bug? (I'm always nervous of reporting bugs without checking first). It there a way around the problem? - I'm using gdal2tiles quite heavily at present. == QGIS version 3.10.2-A Coruña QGIS code revision 616ad4531b Compiled against Qt 5.9.5 Running against Qt 5.9.5 Compiled against GDAL/OGR 2.2.3 Running against GDAL/OGR 2.2.3 Compiled against GEOS 3.6.2-CAPI-1.10.2 Running against GEOS 3.6.2-CAPI-1.10.2 4d2925d6 Compiled against SQLite 3.22.0 Running against SQLite 3.22.0 PostgreSQL Client Version 10.10 (Ubuntu 10.10-0ubuntu0.18.04.1) SpatiaLite Version 4.3.0a QWT Version 6.1.3 QScintilla2 Version 2.10.2 PROJ.4 Version 493 OS Version Ubuntu 18.04.4 LTS -- Sent from: http://osgeo-org.1560.x6.nabble.com/QGIS-User-f4125267.html ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] QGIS 3.10.1 Lost toolbox and tools
For the last few days QGIS has been starting without loading the Toolbox or Vector and Raster tools. I get this Python warning: traceback: File "", line 1, in File "/usr/lib/python3/dist-packages/qgis/utils.py", line 359, in startPlugin plugins[packageName].initGui() File "/home/nick/.local/share/QGIS/QGIS3/profiles/default/python/plugins/QuickWKT/QuickWKT.py", line 68, in initGui self.dlg = QuickWKTDialog() File "/home/nick/.local/share/QGIS/QGIS3/profiles/default/python/plugins/QuickWKT/QuickWKTDialog.py", line 51, in __init__ uic.loadUi(ui_path, self) File "/usr/lib/python3/dist-packages/PyQt5/uic/__init__.py", line 226, in loadUi return DynamicUILoader(package).loadUi(uifile, baseinstance, resource_suffix) File "/usr/lib/python3/dist-packages/PyQt5/uic/Loader/loader.py", line 51, in __init__ UIParser.__init__(self, QtCore, QtGui, QtWidgets, LoaderCreatorPolicy(package)) File "/usr/lib/python3/dist-packages/PyQt5/uic/uiparser.py", line 177, in __init__ self.factory = QObjectCreator(creatorPolicy) File "/usr/lib/python3/dist-packages/PyQt5/uic/objcreator.py", line 85, in __init__ if self.load_plugin(filename, plugin_globals, plugin_locals): File "/usr/lib/python3/dist-packages/PyQt5/uic/objcreator.py", line 152, in load_plugin plugin = open(filename, 'rU') System and software details: QGIS version 3.10.1-A Coruña QGIS code revision ef24c526da Compiled against Qt 5.9.5 Running against Qt 5.9.5 Compiled against GDAL/OGR 2.2.3 Running against GDAL/OGR 2.2.3 Compiled against GEOS 3.6.2-CAPI-1.10.2 Running against GEOS 3.6.2-CAPI-1.10.2 4d2925d6 Compiled against SQLite 3.22.0 Running against SQLite 3.22.0 PostgreSQL Client Version 10.10 (Ubuntu 10.10-0ubuntu0.18.04.1) SpatiaLite Version 4.3.0a QWT Version 6.1.3 QScintilla2 Version 2.10.2 PROJ.4 Version 493 OS Version Ubuntu 18.04.3 LTS Active python plugins AzimuthMeasurement; QPackage; valuetool; quick_map_services; FreehandRasterGeoreferencer; CSMapMaker; clipper; TlugProcessing; Qgis2threejs; profiletool; processing_whitebox; raster_tracer; pointsamplingtool; batch_hillshader-master; LAStools; excel_sync; qgsAzimuth; QuickWKT; mmqgis; qgis2web; TomBio; db_manager; MetaSearch Wondering what if anything I can do about this? Regards, Nick. -- Sent from: http://osgeo-org.1560.x6.nabble.com/QGIS-User-f4125267.html ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Georeference png files
It is possible to assign georeferenced bounds to a raster using gdal_translate: gdal_translate -a_ullr input.png output.tiff Where: = upper left x = upper left y = lower right x = lower right y The resulting tiff won't contain CRS data. Nick. -- Sent from: http://osgeo-org.1560.x6.nabble.com/QGIS-User-f4125267.html ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] WMS Problem in QGIS 3.10
Thanks again Alessandro, it's quite a problem for me. Best, N. -- Sent from: http://osgeo-org.1560.x6.nabble.com/QGIS-User-f4125267.html ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] WMS Problem in QGIS 3.10
Thanks Alessandro, it was merged and closed. I'll reopen it and add the comment there. Best, Nick. -- Sent from: http://osgeo-org.1560.x6.nabble.com/QGIS-User-f4125267.html ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] WMS Problem in QGIS 3.10
Version 3.10.1 arrived here during the week. Sad to say it would appear that the WMS problem persists. Could anyone confirm this? Should I report this as a bug too? Best, Nick. -- Sent from: http://osgeo-org.1560.x6.nabble.com/QGIS-User-f4125267.html ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] WMS Problem in QGIS 3.10
Version 3.10.1 arrived here during the week. Sad to say it would appear that the WMS problem persists. Could anyone confirm this? Should I report this as a bug too? Best, Nick. -- Sent from: http://osgeo-org.1560.x6.nabble.com/QGIS-User-f4125267.html ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] WMS ortho-imagery load-up crashes QGIS / takes computer offline
If you depend on WMS data I think you're probably right to hold-off upgrading for the time being. QGIS 3.10 has problems with some WMS servers. -- Sent from: http://osgeo-org.1560.x6.nabble.com/QGIS-User-f4125267.html ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] gvsig?
I have gvSIG installed, solely because out of the box it can read ECWs and export them as geotiffs (which I can use in QGIS). It wouldn't be right for me to make comparisons between QGIS and gvSIG because I just don't have enough experience of using the latter. N. -- Sent from: http://osgeo-org.1560.x6.nabble.com/QGIS-User-f4125267.html ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] WMS Problem in QGIS 3.10
Thanks for this Richard, it's good to know what's causing the problem and I'll live with it for the time being. I've also reported the problem to the EA in the hope that they might be able to do something about it at the other end. Should I post a QGIS bug report? Best, Nick. -- Sent from: http://osgeo-org.1560.x6.nabble.com/QGIS-User-f4125267.html ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] WMS Problem in QGIS 3.10
I have problems with loading UK Environment Agency WMS layers. This has only arisen since I installed QGIS 3.10. I understand that when QGIS makes a WMS request it adds the current version to the User-Agent string, so in version QGIS 3.10.0 this results in "Mozilla/5.0 QGIS/3.10.0-A Coruña" and that it might be the "ñ" character that's causing the request to be rejected. For testing purposes here is a typical EA WMS request: https://environment.data.gov.uk/spatialdata/lidar-composite-digital-surface-model-dtm-1m/wms I've reported the problem to the EA, but I wonder if I should report it as a QGIS bug as well? All of the above assumes that it is the extended set character that is causing the problem and of course this might not be the case. -- Sent from: http://osgeo-org.1560.x6.nabble.com/QGIS-User-f4125267.html ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Loss of scale after clipping
Hi David, it just had the ring of a possible CRS problem. If you'd care to email the raster image and the clipping layer I'll try it here, you have my email address I think. N. -- Sent from: http://osgeo-org.1560.x6.nabble.com/QGIS-User-f4125267.html ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Loss of scale after clipping
Just a thought. A friend upgraded recently and some of his settings didn't carry over, it was a CRS problem. Perhaps just check that the default system CRS, the project CRS and the CRS of each layer is set correctly before clipping. -- Sent from: http://osgeo-org.1560.x6.nabble.com/QGIS-User-f4125267.html ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Creating polygons using bearing and distance
Sorry, my reply crossed with Calvin's. -- Sent from: http://osgeo-org.1560.x6.nabble.com/QGIS-User-f4125267.html ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Creating polygons using bearing and distance
Hi Dylan, If I understand your problem, I think the Azimuth and Distance plugin will do what you require. Cheers, Nick. -- Sent from: http://osgeo-org.1560.x6.nabble.com/QGIS-User-f4125267.html ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Vector Affine trouble
Hi Rutger, I gather your contour data is for Scotland. In case you didn't know, you can download a GeoPackage containing contours at 10 m vertical intervals for the whole of GB (including Scotland) as open data from the Ordnance Survey. I use this data myself in QGIS. See: http://data-format-trial-osonline.opendata.arcgis.com/pages/os-terrain-50 Best, N. -- Sent from: http://osgeo-org.1560.x6.nabble.com/QGIS-User-f4125267.html ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] QGIS 3.4.1 Raster merge problem
Thanks for this Jürgen, I installed python-gdal and things are now working as they should. N. -- Sent from: http://osgeo-org.1560.x6.nabble.com/QGIS-User-f4125267.html ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] QGIS 3.4.1 Raster merge problem
Ubuntu 18.04. QGIS 3.4.1 I have a problem when attempting to merge rasters, the process fails with the following message: 2018-11-12T16:06:37 INFOGDAL execution console output /bin/sh: 1: gdal_merge.py: not found Thus it appears that QGIS is looking for a file called 'gdal_merge.py' but not finding it. In fact 'gdal_merge.py' does not exist on my system, I do however have a 'merge.py' here: /usr/share/qgis/python/plugins/processing/algs/gdal/merge.py I think this is probably a bug, but I don't seem able to log-on to the bug tracker. -- Sent from: http://osgeo-org.1560.x6.nabble.com/QGIS-User-f4125267.html ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Generating a raster from ASCII data
The *.asc files supplied by the EA will load directly into QGIS as rasters. Layer -> Add layer -> Add raster layer. N. -- View this message in context: http://osgeo-org.1560.x6.nabble.com/Generating-a-raster-from-ASCII-data-tp5264701p5264702.html Sent from the Quantum GIS - User mailing list archive at Nabble.com. ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: http://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Simultaneous extraction of coordinates & elevation
For each pixel in a DEM you can write out the coordinate and elevation to a space-delimited text file simply enough. Raster -> Conversion -> Translate (Convert format) and select 'ASCI Gridded XYZ (*.xyz *.XYZ)' as the output format. N. -- View this message in context: http://osgeo-org.1560.x6.nabble.com/Simultaneous-extraction-of-coordinates-elevation-tp5235155p5235190.html Sent from the Quantum GIS - User mailing list archive at Nabble.com. ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Saving Map
Unless something has changed recently, no you can't do this. N. -- View this message in context: http://osgeo-org.1560.x6.nabble.com/Saving-Map-tp5234940p5234981.html Sent from the Quantum GIS - User mailing list archive at Nabble.com. ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] QGIS Processing toolbox and Grass 7
64-bit Ubuntu 12.04.5, QGIS 2.5 (nightly) from the Ubuntugis repository. I'm having problems with Grass 7 tools when trying to run them from the Processing toolbox. Processing fails with the error message shown below. I have tried deleting /home/nick/.qgis2/processing, but the problem persists. Grass commands stopped working after I removed my old installation of Grass and replaced it with Grass70. Under 'Processing options' I have unticked Grass and ticked Grass 7, there do not appear to be any other (GUI) options available. Can anyone help? Regards, Nick. An error has occured while executing Python code: Traceback (most recent call last): File /home/nick/.qgis2/python/plugins/processing/gui/ProcessingToolbox.py, line 191, in executeAlgorithm dlg = ParametersDialog(alg) File /home/nick/.qgis2/python/plugins/processing/gui/ParametersDialog.py, line 38, in __init__ self.paramTable = ParametersPanel(self, alg) File /home/nick/.qgis2/python/plugins/processing/gui/ParametersPanel.py, line 84, in __init__ self.initGUI() File /home/nick/.qgis2/python/plugins/processing/gui/ParametersPanel.py, line 87, in initGUI tooltips = self.alg.getParameterDescriptions() File /home/nick/.qgis2/python/plugins/processing/algs/grass7/Grass7Algorithm.py, line 101, in getParameterDescriptions helpfile = self.helpFile() AttributeError: Grass7Algorithm instance has no attribute 'helpFile' Python version: 2.7.3 (default, Feb 27 2014, 20:09:21) [GCC 4.6.3] QGIS version: 2.5.0-Master Master, exported Python path: ['/home/nick/.qgis2/python/plugins/processing', '/usr/share/qgis/python', u'/home/nick/.qgis2/python', u'/home/nick/.qgis2/python/plugins', '/usr/share/qgis/python/plugins', '/usr/lib/python2.7', '/usr/lib/python2.7/plat-linux2', '/usr/lib/python2.7/lib-tk', '/usr/lib/python2.7/lib-old', '/usr/lib/python2.7/lib-dynload', '/usr/local/lib/python2.7/dist-packages', '/usr/lib/python2.7/dist-packages', '/usr/lib/python2.7/dist-packages/PIL', '/usr/lib/python2.7/dist-packages/gst-0.10', '/usr/lib/python2.7/dist-packages/gtk-2.0', '/usr/lib/pymodules/python2.7', '/usr/lib/python2.7/dist-packages/ubuntu-sso-client', '/usr/lib/python2.7/dist-packages/wx-2.8-gtk2-unicode', '/usr/share/qgis/python', '/home/nick/.qgis2/python/plugins/mmqgis/forms', '/usr/share/qgis/python/plugins/fTools/tools'] -- View this message in context: http://osgeo-org.1560.x6.nabble.com/QGIS-Processing-toolbox-and-Grass-7-tp5158813.html Sent from the Quantum GIS - User mailing list archive at Nabble.com. ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] 'NULL' labels
Ubuntu 12.04, QGIS 2.3.0-Master from Ubuntugis. QGIS is labelling features with NULL attributes with 'NULL's. This started to happen following an update a few days ago, does anyone else have this problem? Nick. -- View this message in context: http://osgeo-org.1560.x6.nabble.com/NULL-labels-tp5137101.html Sent from the Quantum GIS - User mailing list archive at Nabble.com. ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] 'NULL' labels
Jürgen E. Fischer wrote Hi Nick, On Fri, 25. Apr 2014 at 01:54:17 -0700, Nick Hopton wrote: Ubuntu 12.04, QGIS 2.3.0-Master from Ubuntugis. QGIS is labelling features with NULL attributes with 'NULL's. This started to happen following an update a few days ago, does anyone else have this problem? The representation of NULL values is configurable in options. 'NULL' for NULL is the default. You could a label expression like coalesce(field,''). See also http://hub.qgis.org/issues/9998 Jürgen Much obliged Jürgen. After updating QGIS I opened a project that I'd been working on to find a screen full of 'NULL' labels, which worried me a little. The default setting must have changed, I've changed it back now. Cheers, Nick. -- View this message in context: http://osgeo-org.1560.x6.nabble.com/NULL-labels-tp5137101p5137123.html Sent from the Quantum GIS - User mailing list archive at Nabble.com. ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] problems with polygonize with qgis2.2
I've been told that the latest version of the polygonizer ('Polygonize')
needs Shapely version 1.2.16 or higher.
N.
--
View this message in context:
http://osgeo-org.1560.x6.nabble.com/problems-with-polygonize-with-qgis2-2-tp5106154p5106298.html
Sent from the Quantum GIS - User mailing list archive at Nabble.com.
___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] How to use Orfeo Toolbox tools in QGIS?
Alex Mandel-2 wrote OTB is usable from Processing, but is optional like SAGA, R, and GRASS the program needs to be installed separately so Processing can use it. Once you have it installed Processing will let you access the algorithms for it. Thanks for this Alex, I've installed OTB and after some tinkering with the configuration of the Processing Toolkit it works. On my system (Ubuntu 12.04/QGIS 2.1.0-Master from Ubuntugis) settings made in Processing options don't stick. It was necessary to edit ~.qgis2/processing/processing.conf as follows to set the directories. OTB_LIB_FOLDER=/usr/lib/otb OTB_FOLDER=/usr/bin/ Best wishes, Nick. -- View this message in context: http://osgeo-org.1560.x6.nabble.com/How-to-use-Orfeo-Toolbox-tools-in-QGIS-tp5102387p5102774.html Sent from the Quantum GIS - User mailing list archive at Nabble.com. ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] How to use Orfeo Toolbox tools in QGIS?
Travis Kroger wrote I asked about this before, but I think I may not have been asking the right question. I want to use the binary morphological filter tool in OTB, but I am unable to install OTB on my home work work computers (either windows 8 pro or windows 7 enterprise). There is no option to include it in the OsGeo4W installer, and it does not get installed using the standalone installer. Is OTB no longer able to be used in QGIS? I can get the tool I need to work in Monteverdi, but using it in QGIS would be preferable if it is still possible. If anyone has any ideas that would be great, or if it can't be used anymore at least then I can stop wasting time trying to figure it out. From what 'Saint' wrote here: http://osgeo-org.1560.x6.nabble.com/Help-with-Orfeotoolbox-in-QGIS-2-0-1-td5101010.html it would appear that OTB is now built-in to the Processing Toolkit and therefore shouldn't need to be installed by other means. That said, it still won't work for me (Ubuntu 12.04/QGIS Nightly from Ubuntugis). N. -- View this message in context: http://osgeo-org.1560.x6.nabble.com/How-to-use-Orfeo-Toolbox-tools-in-QGIS-tp5102387p5102448.html Sent from the Quantum GIS - User mailing list archive at Nabble.com. ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Azimuth and distance plugin for QGIS 2.X
giedrius wrote I tried, but the plugin does not work. Writes error: An error has occured while executing Python code: Traceback (most recent call last): File /home/giedrius/.qgis2/python/plugins/qgsAzimuth/qgsAzimuth.py, line 188, in addgeometry if (surveytype== 'polygonal'): UnboundLocalError: local variable 'surveytype' referenced before assignment Python version: 2.7.3 (default, Jan 2 2013, 14:09:21) [GCC 4.7.2] QGIS version: 2.1.0-Master Master, exported Python path: ['/home/giedrius/.qgis2/python/plugins/processing', '/usr/share/qgis/python', u'/home/giedrius/.qgis2/python', u'/home/giedrius/.qgis2/python/plugins', '/usr/share/qgis/python/plugins', '/usr/lib/python2.7', '/usr/lib/python2.7/plat-linux2', '/usr/lib/python2.7/lib-tk', '/usr/lib/python2.7/lib-old', '/usr/lib/python2.7/lib-dynload', '/usr/local/lib/python2.7/dist-packages', '/usr/lib/python2.7/dist-packages', '/usr/lib/python2.7/dist-packages/PIL', '/usr/lib/python2.7/dist-packages/gtk-2.0', '/usr/lib/pymodules/python2.7', '/usr/lib/python2.7/dist-packages/wx-2.8-gtk2-unicode', '/usr/share/qgis/python', '/home/giedrius/.qgis2/python/plugins/mmqgis/forms', '/usr/share/qgis/python/plugins/fTools/tools', '/home/giedrius/.qgis2/python/plugins/DigitizingTools/tools', '~/.qgis/python', '/media/sda4/home/giedrius/Dokumentai/qgis'] Just checking. After entering the starting vertex, the azimuth and the distance you did press the Add to Bottom button before pressing the Draw button? I get exactly the same errors as you if I don't do this. Nick. -- View this message in context: http://osgeo-org.1560.x6.nabble.com/Azimuth-and-distance-plugin-for-QGIS-2-X-tp5097302p5098854.html Sent from the Quantum GIS - User mailing list archive at Nabble.com. ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] No python in 2.0?
I get a similar crop of messages and no Python support when starting QGIS following yesterday's update of the nightly development version. (Ubuntu 12.04). This seems to happen sometimes, in the past it's been a problem with a bad configuration file. N. -- View this message in context: http://osgeo-org.1560.x6.nabble.com/No-python-in-2-0-tp5079890p5080515.html Sent from the Quantum GIS - User mailing list archive at Nabble.com. ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Qtiles install problem
An attempt to install the Qtiles plug-in this morning succeeded, so I guess this means it's been fixed. Many thanks for this. Nick. -- View this message in context: http://osgeo-org.1560.x6.nabble.com/Qtiles-install-problem-tp5077657p5078505.html Sent from the Quantum GIS - User mailing list archive at Nabble.com. ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] new user
Hi Gill, I might not understand your problem fully, but I think that as a newcomer to QGIS a reasonable approach would be to load your OS OpenData map images first and then load the contours. (I'd keep clear of the OpenData contour DXFs if I were you and go for the new contour data in shapefile format.) Once you have something that looks reasonable on the screen you could then export a high-res image from the Print Composer that could be loaded into Photoshop. From what you have written I think your base mapping must be OS VectorMap District rasters. If I remember rightly these have a resolution of around 250 dpi so it probably wouldn't make much sense to export an image from the Print Composer at much greater than this. Cheers, Nick. -- View this message in context: http://osgeo-org.1560.x6.nabble.com/new-user-tp5077199p5077664.html Sent from the Quantum GIS - User mailing list archive at Nabble.com. ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Qtiles install problem
Alexander Bruy wrote try to remove qtiles folder and install it from scratch. Sorry Alex, I'm not finding a qtiles sub-directory in .qgis, .qgis2 or /usr/share/qgis/python/plugins/. Any ideas? Cheers, Nick. -- View this message in context: http://osgeo-org.1560.x6.nabble.com/Qtiles-install-problem-tp5077657p5077689.html Sent from the Quantum GIS - User mailing list archive at Nabble.com. ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Checking what is the scale/resolution of vector layer
Luisa Peña wrote Dear all, I have a vector (in ESRI Shapefile) and I wanted to know what is its scale of oproduction (1:1000 or 1:10 or something) since I have no associated metada. Thanks Luisa ___ Qgis-user mailing list Qgis-user@.osgeo http://lists.osgeo.org/mailman/listinfo/qgis-user Hi Luisa, shapefiles don't have a 'scale' as such, you can render them in QGIS at any scale that produces the result you are looking for, but it's for you to set the scale for the project. For example, a lot of the shapefiles I use render well at a scale of 1:25000 but in most cases I can also use them at scales of say 1:1 or 1:5. N. -- View this message in context: http://osgeo-org.1560.x6.nabble.com/Checking-what-is-the-scale-resolution-of-vector-layer-tp5071761p5071829.html Sent from the Quantum GIS - User mailing list archive at Nabble.com. ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] QGIS Master dependency problem.
Thanks all, that fixed the problem. Nick. -- View this message in context: http://osgeo-org.1560.x6.nabble.com/QGIS-Master-dependency-problem-tp5061716p5061972.html Sent from the Quantum GIS - User mailing list archive at Nabble.com. ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] QGIS Master dependency problem.
QGIS Master from the nightly repository, Ubuntu 12.04 (amd64). Hi All, There were problems with this morning's upgrade (and yesterday's too) with python-qgis-common and python-qgis: pycentral: pycentral pkginstall: error byte-compiling files (549) pycentral pkginstall: error byte-compiling files (549) dpkg: error processing python-qgis-common (--configure): subprocess installed post-installation script returned error exit status 1 dpkg: dependency problems prevent configuration of python-qgis: python-qgis depends on python-qgis-common (= 1.9.0+git20130618+59fd5e0~precise1); however: Package python-qgis-common is not configured yet. dpkg: error processing python-qgis (--configure): dependency problems - leaving unconfigured No apport report written because the error message indicates it's a follow-up error from a previous failure. Errors were encountered while processing: python-qgis-common python-qgis E: Sub-process /usr/bin/dpkg returned an error code (1) Regards, Nick. -- View this message in context: http://osgeo-org.1560.x6.nabble.com/QGIS-Master-dependency-problem-tp5061716.html Sent from the Quantum GIS - User mailing list archive at Nabble.com. ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] How to georeference vector data
Jacob Overgaard Madsen wrote What is the easiest way to fix these data? I have played around with the Affinetransformation plugin, but it's extremely cumbersome to do with this plugin, as it's really trial and error. I don't get on with the QGIS affine plug-in either. You might care to try GRASS v.transform, which is part of the Sextante tool box. See: http://grass.osgeo.org/grass64/manuals/v.transform.html It's very simple to use and works well. Nick. -- View this message in context: http://osgeo-org.1560.x6.nabble.com/How-to-georeference-vector-data-tp5061610p5061638.html Sent from the Quantum GIS - User mailing list archive at Nabble.com. ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] QGIS Master, problem adding attributes to newly-created feature
Ubuntu 12.04 (64-bit), QGIS Master. After creating a line in a shape file the form for entering its attribute data pops-up as it should. However, it is not possible to enter the attribute data (sometimes the form is greyed-out and sometimes it is empty, this has varied with differing versions of QGIS Master). I suppose what I'm asking is: Is it just me? Regards, Nick. -- View this message in context: http://osgeo-org.1560.x6.nabble.com/QGIS-Master-problem-adding-attributes-to-newly-created-feature-tp5061021.html Sent from the Quantum GIS - User mailing list archive at Nabble.com. ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] open .tab
Ramon Andiñach wrote Hi Nick, Not that I'll definitely be able to help, but what sort of not opening properly? (and which QGIS?) What should happen is that if you open the TIFF, then QGIS reads the tab file for coordinate system information and displays it. 1.9 is better at this than 1.8 was. -ramon. Hi Ramon, I posted a message on GDAL-Dev about my problem, which Frank Warmerdam was kind enough to pick up. See: http://osgeo-org.1560.x6.nabble.com/gdal-dev-TIFs-with-TABs-problem-td5056444.html I thought Agnes's problem might be the same (but it wasn't). Cheers, Nick. -- View this message in context: http://osgeo-org.1560.x6.nabble.com/open-tab-tp5056255p5056698.html Sent from the Quantum GIS - User mailing list archive at Nabble.com. ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] open .tab
Hi Agnes, I'm having problems with TIFF images with TAB files not opening properly in QGIS. As with you, some do and some don't. Are your problems with images too? Regards, Nick. -- View this message in context: http://osgeo-org.1560.x6.nabble.com/open-tab-tp5056255p5056452.html Sent from the Quantum GIS - User mailing list archive at Nabble.com. ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] affine transformation
Hi Hannah, have you tried running GRASS v.transform from the Sextante toolbox? It's always worked for me. N. -- View this message in context: http://osgeo-org.1560.x6.nabble.com/affine-transformation-tp5052423p5052880.html Sent from the Quantum GIS - User mailing list archive at Nabble.com. ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Master update problem
tudorbarascu wrote Hi, I had the same problem and the solution is to edit the /usr/share/qgis/python/plugins/sextante/tests/SagaTest.py. The first lines should look like: from sextante.tests.TestData import points, points2, polygons, polygons2, lines, union,\ table, polygonsGeoJson, raster The problem was that table, polygonsGeoJson or I can't remember exactly which words were duplicated. Delete them or just paste the above line over its correspondent and everything will be peachy. Thanks for this Tudor. Commenting out the duplicate text in SagaTest.py then reinstalling python-qgis and python-qgis-common did the trick. Nick. -- View this message in context: http://osgeo-org.1560.n6.nabble.com/Master-update-problem-tp5044751p5044944.html Sent from the Quantum GIS - User mailing list archive at Nabble.com. ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Polygonizer plugin 2.1 install error
Hi Ivan, how did you install Shapely? The version you get using the OSGeo4W installer has always worked for me. Nick. -- View this message in context: http://osgeo-org.1560.n6.nabble.com/Polygonizer-plugin-2-1-install-error-tp5044829p5044946.html Sent from the Quantum GIS - User mailing list archive at Nabble.com. ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] Master update problem
Ubuntu 12.04 (amd64), Master, nightly repository.
Hi all, attempting to update Master yesterday and again earlier today left
me with no Python support. The problem appears to be with python-qgis and
and python-qgis-common. The message from the update manager is shown below.
Any ideas?
Regards,
Nick.
installArchives() failed: Setting up python-qgis-common
(1.9.0+git20130401+af7d6f8~precise1) ...
Compiling /usr/share/qgis/python/plugins/sextante/tests/SagaTest.py ...
Sorry: IndentationError: ('unexpected indent',
('/usr/share/qgis/python/plugins/sextante/tests/SagaTest.py', 5, 4, '
table, polygonsGeoJson, raster\n'))
pycentral: pycentral pkginstall: error byte-compiling files (539)
pycentral pkginstall: error byte-compiling files (539)
dpkg: error processing python-qgis-common (--configure):
subprocess installed post-installation script returned error exit status 1
dpkg: dependency problems prevent configuration of python-qgis:
python-qgis depends on python-qgis-common (=
1.9.0+git20130401+af7d6f8~precise1); however:
Package python-qgis-common is not configured yet.
dpkg: error processing python-qgis (--configure):
dependency problems - leaving unconfigured
No apport report written because the error message indicates its a followup
error from a previous failure.
Errors were encountered while processing:
python-qgis-common
python-qgis
Error in function:
SystemError: E:Sub-process /usr/bin/dpkg returned an error code (1)
Setting up python-qgis-common (1.9.0+git20130401+af7d6f8~precise1) ...
Compiling /usr/share/qgis/python/plugins/sextante/tests/SagaTest.py ...
Sorry: IndentationError: ('unexpected indent',
('/usr/share/qgis/python/plugins/sextante/tests/SagaTest.py', 5, 4, '
table, polygonsGeoJson, raster\n'))
pycentral: pycentral pkginstall: error byte-compiling files (539)
pycentral pkginstall: error byte-compiling files (539)
dpkg: error processing python-qgis-common (--configure):
subprocess installed post-installation script returned error exit status 1
dpkg: dependency problems prevent configuration of python-qgis:
python-qgis depends on python-qgis-common (=
1.9.0+git20130401+af7d6f8~precise1); however:
Package python-qgis-common is not configured yet.
dpkg: error processing python-qgis (--configure):
dependency problems - leaving unconfigured
--
View this message in context:
http://osgeo-org.1560.n6.nabble.com/Master-update-problem-tp5044751.html
Sent from the Quantum GIS - User mailing list archive at Nabble.com.
___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Polygon digitalization
Just checking Bert, but have you seen this? http://confound.me.uk/maps/ppv4.pdf This is the way I work, I find it quicker than tracing polygons and it also separates the job of digitising from the job of entering data (which I find convenient). The only other way I can think of would be to start off with a large polygon and slice it up into smaller ones using the split features tool. Not tested here and I don't think this method will let you cut holes in polygons. Nick. -- View this message in context: http://osgeo-org.1560.n6.nabble.com/Polygon-digitalization-tp5040680p5040717.html Sent from the Quantum GIS - User mailing list archive at Nabble.com. ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] convert UTM_UPS data from gps to decimal degrees
All I can think of is that these might be UPS coordinates that have somehow got themselves formatted as geographic coordinates. What part of the world are we talking about here, where should the points plot on the globe? Nick. -- View this message in context: http://osgeo-org.1560.n6.nabble.com/convert-UTM-UPS-data-from-gps-to-decimal-degrees-tp5040112p5040311.html Sent from the Quantum GIS - User mailing list archive at Nabble.com. ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] convert UTM_UPS data from gps to decimal degrees
Gerardo Jimenez wrote First, your data is kind of rare, you can not have more than 60 minutes or more than 60 seconds (50°96'06''2N for instance). Share Gerardo's confusion. How can you have a geographic ordinate like 50°96'06''2N, it doesn't make sense. Surely no GPS receiver would produce geographic coordinates like this. Nick. -- View this message in context: http://osgeo-org.1560.n6.nabble.com/convert-UTM-UPS-data-from-gps-to-decimal-degrees-tp5040112p5040187.html Sent from the Quantum GIS - User mailing list archive at Nabble.com. ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Raster calculator
It's not the spaces in the filenames causing the problem is it? Probably not, but it might be worth checking. N. -- View this message in context: http://osgeo-org.1560.n6.nabble.com/Raster-calculator-tp5035632p5035750.html Sent from the Quantum GIS - User mailing list archive at Nabble.com. ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] x coordinates field calculator
Confirmed here too. Current nightly Master, Ubuntu 12.04. Just the fields visible on the screen are filled, the rest are filled with NULLs. I think I've seen this reported already, somewhere. Nick. -- View this message in context: http://osgeo-org.1560.n6.nabble.com/x-coordinates-field-calculator-tp5033420p5033434.html Sent from the Quantum GIS - User mailing list archive at Nabble.com. ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Extract colour categories from tif file
NickS wrote I have a very simple georeferenced tif image file - it has about 8 different colour categories, which represent numeric ranges. How can I convert the colours (which are in RGB format) into a raster, or better still into a polygonised vector file? Raster - Conversion - RGB to PCT will convert an RGB image to a one-band indexed (paletted) image. You should be able to polygonise this by going Raster - Conversion - Polygonize. I haven't checked but it might even be possible to polygonise the image directly, without converting it to PCT first. N. -- View this message in context: http://osgeo-org.1560.n6.nabble.com/Extract-colour-categories-from-tif-file-tp5032291p5032411.html Sent from the Quantum GIS - User mailing list archive at Nabble.com. ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] Polygonizer plug-in
Using nightly Master, Ubuntu 12.04 (amd64). Attempting to use the Polygonizer fails with the Python error listed below. Is this just for me? Regards, Nick. ==ERRORS An error has occured while executing Python code: Traceback (most recent call last): File /home/nick/.qgis//python/plugins/Polygonizer/PolygonizerDialog.py, line 103, in threadFinished msg = QMessageBox.question(self, 'Polygonizer', 'Polygonization finished in %03.2f seconds. \n %d polygons were crested. \n Load created layer?' % ((self.t2 - self.t1), polyCount), QMessageBox.Yes | QMessageBox.No, QMessageBox.Yes) NameError: global name 'polyCount' is not defined Python version: 2.7.3 (default, Aug 1 2012, 05:25:23) [GCC 4.6.3] QGIS version: 1.9.0-Master Master, exported Python path: ['/usr/share/qgis/python/plugins/sextante', '/usr/share/qgis/python', '/home/nick/.qgis//python', '/home/nick/.qgis//python/plugins', '/usr/share/qgis/python/plugins', '/usr/lib/python2.7', '/usr/lib/python2.7/plat-linux2', '/usr/lib/python2.7/lib-tk', '/usr/lib/python2.7/lib-old', '/usr/lib/python2.7/lib-dynload', '/usr/local/lib/python2.7/dist-packages', '/usr/lib/python2.7/dist-packages', '/usr/lib/python2.7/dist-packages/PIL', '/usr/lib/pymodules/python2.7/gtk-2.0', '/usr/lib/python2.7/dist-packages/gst-0.10', '/usr/lib/python2.7/dist-packages/gtk-2.0', '/usr/lib/pymodules/python2.7', '/usr/lib/python2.7/dist-packages/ubuntu-sso-client', '/usr/lib/python2.7/dist-packages/ubuntuone-client', '/usr/lib/python2.7/dist-packages/ubuntuone-control-panel', '/usr/lib/python2.7/dist-packages/ubuntuone-couch', '/usr/lib/python2.7/dist-packages/ubuntuone-installer', '/usr/lib/python2.7/dist-packages/ubuntuone-storage-protocol', '/usr/lib/python2.7/dist-packages/wx-2.8-gtk2-unicode', '/usr/share/qgis/python/plugins/fTools/tools'] -- View this message in context: http://osgeo-org.1560.n6.nabble.com/Polygonizer-plug-in-tp5031565.html Sent from the Quantum GIS - User mailing list archive at Nabble.com. ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] QGIS for surfaces documentation (of Mural Painting)
If you know the dimensions of the painting then georeferencing the image should not present problems. For example, if the painting is 200 cm wide by 100 cm high you could georeference the image using a coordinate of 0,0 for its bottom left-hand corner and 200,100 for its top right-hand corner. In the georeferencer use 'Helmert' and 'Linear' and set a CRS of (say) EPSG:3395. The CRS is not really important in your case, but you have to specify something. N. -- View this message in context: http://osgeo-org.1560.n6.nabble.com/QGIS-for-surfaces-documentation-of-Mural-Painting-tp5030059p5030096.html Sent from the Quantum GIS - User mailing list archive at Nabble.com. ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] Sextante toolbox problem
I'm trying to use the Sextante toolbox algorithm GRASS v.dissolve. I want to save the results to a file, but when I try to do this all I am offered are file types like TIFF, HDR, VRT and so on. The option to save to SHP is not available. QGIS Master, Ubuntu 12.04 (amd64). Regards, Nick. -- View this message in context: http://osgeo-org.1560.n6.nabble.com/Sextante-toolbox-problem-tp5030099.html Sent from the Quantum GIS - User mailing list archive at Nabble.com. ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Sextante toolbox problem
Thanks for the reply Victor. Many thanks too for the incredible, invaluable Sextante tookbox. N. -- View this message in context: http://osgeo-org.1560.n6.nabble.com/Sextante-toolbox-problem-tp5030099p5030101.html Sent from the Quantum GIS - User mailing list archive at Nabble.com. ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] QGIS for surfaces documentation (of Mural Painting)
Giacomo Marchioro wrote Thanks a lot for your help! The problem is that when I measure a distance in the layer I have wrongs outputs, I measure lacunae of thousand kilometers! I'm searching some plugin to georeference in a ECEF system (so I would have no more angular distances) but is quite uncommon and I don't think QGIS can display a layer with coordinates (e.g. 0,200,0) that would be inside the earth! It's difficult to know what is happening here. But assuming that you georeferenced the image in the way I mentioned, firstly disable on-the-fly CRS transformation and then right-click on the layer in the layers panel and set the project CRS to the layer CRS. N. -- View this message in context: http://osgeo-org.1560.n6.nabble.com/QGIS-for-surfaces-documentation-of-Mural-Painting-tp5030059p5030173.html Sent from the Quantum GIS - User mailing list archive at Nabble.com. ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Polygonize problem:Polygonize function doesn't overlay the shape file over the raster file.
I think Anita has already pointed you towards the answer to this question on SE. You must georeference the raster. Nick. -- View this message in context: http://osgeo-org.1560.n6.nabble.com/Polygonize-problem-Polygonize-function-doesn-t-overlay-the-shape-file-over-the-raster-file-tp5029608p5029637.html Sent from the Quantum GIS - User mailing list archive at Nabble.com. ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] python, again...
Matteo Ghetta wrote a few days ago I pointed out the problem when I update QGIS (see my mail of 08.01). It seems that still the problem is not been fixed in the nightly repository. But I need to use the plugins, so has anyone an idea of when this problem will be resolved? Are there some alternatives (I'm not able to compile the master version from source..)? Hi Matteo, I just reinstalled Master on Ubuntu 12.04 (amd64) and had this problem. It might be worth checking the ownership of, and permissions on, your .qgis directory. For some reason on my system the ownership had set itself to root with no read/write permissions for other users. Correcting this solved my problem. Nick. -- View this message in context: http://osgeo-org.1560.n6.nabble.com/python-again-tp5026935p5027275.html Sent from the Quantum GIS - User mailing list archive at Nabble.com. ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] pyhton problem after updating
I had a working Master on Ubuntu 12.04 until Sunday, when I tried to update using the package manager. The update failed with the same problem that you have. You might be interested in an earlier failure, see the first couple of posts here: http://osgeo-org.1560.n6.nabble.com/Master-install-Problems-td5024405.html On Sunday I gave up, did a complete removal of Master and then reinstalled 1.8 (which is working, thank goodness). Regards, Nick. -- View this message in context: http://osgeo-org.1560.n6.nabble.com/pyhton-problem-after-updating-tp5026121p5026183.html Sent from the Quantum GIS - User mailing list archive at Nabble.com. ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Master install Problems
Thanks to Jürgen and Bernd for the comments. I still don't know whether the problem was caused by me or by the repository, but I'm pleased to say that Master installed correctly when I tried again this morning (and I hadn't changed anything at my end). Regards, Nick. -- View this message in context: http://osgeo-org.1560.n6.nabble.com/Master-install-Problems-tp5024405p5024445.html Sent from the Quantum GIS - User mailing list archive at Nabble.com. ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] Master install Problems
Ubuntu 12.10 (amd64), repository is qgis.org/debian-nightly precise main. I'm trying to install the nightly build of Master on my system but have a hit a problem, see below. Searching on the Internet suggests that other people have experienced similar problems, but with no solution mentioned. Can anyone help me with this? == nick@nick-6150M2MA:~$ sudo apt-get install qgis Reading package lists... Done Building dependency tree Reading state information... Done Some packages could not be installed. This may mean that you have requested an impossible situation or if you are using the unstable distribution that some required packages have not yet been created or been moved out of Incoming. The following information may help to resolve the situation: The following packages have unmet dependencies. qgis : Depends: qgis-providers (= 1.9.0+git20121208+7841975~precise1) but it is not going to be installed Depends: qgis-common (= 1.9.0+git20121208+7841975~precise1) but it is not going to be installed Recommends: qgis-plugin-globe but it is not going to be installed Recommends: qgis-plugin-grass but it is not going to be installed Recommends: python-qgis but it is not going to be installed E: Unable to correct problems, you have held broken packages. == Regards, Nick. -- View this message in context: http://osgeo-org.1560.n6.nabble.com/Master-install-Problems-tp5024405.html Sent from the Quantum GIS - User mailing list archive at Nabble.com. ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Master install Problems
Further to the above, one of the packages flagged with unmet dependencies was python-qgis. Trying to install just this produced the following message: = The following packages have unmet dependencies. python-qgis : Depends: python-qgis-common (= 1.9.0+git20121208+7841975~precise1) but 1.9.0+git20121210+df2c1c5~precise1 is to be installed E: Unable to correct problems, you have held broken packages. = My reading of this is that python-qgis requires python-qgis-common (1.9.0+git20121208+7841975~precise1) but the version in the repository is (1.9.0+git20121210+df2c1c5~precise1). Does this make any sort of sense? I suppose what I'm really asking is, have I done anything wrong? Nick. -- View this message in context: http://osgeo-org.1560.n6.nabble.com/Master-install-Problems-tp5024405p5024407.html Sent from the Quantum GIS - User mailing list archive at Nabble.com. ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Sextante tool box problems
Victor Olaya-3 wrote If you go to the SEXTANTE configuration dialog, you will see a GRASS entry, and there is an option to enable console output logging. Enable it, run your GRASS command again...and hopefully you will have information about what is happening Here is the console output log for grass:v.parallel: GRASS execution console output Cleaning up temporary files ... Starting GRASS ... GRASS_INFO_ERROR(4801,1): MAPSET user not found GRASS_INFO_END(4801,1) /home/nick/.qgis//sextante/tempdata/grassdata/temp_location/user: Not a valid GRASS location Cleaning up temporary files ... Starting GRASS ... GRASS_INFO_ERROR(4837,1): MAPSET user not found GRASS_INFO_END(4837,1) /home/nick/.qgis//sextante/tempdata/grassdata/temp_location/user: Not a valid GRASS location A few days ago I had the problem described here: http://osgeo-org.1560.n6.nabble.com/Re-Qgis-user-python-error-td5020446.html and fixed it as suggested (by changing the first line of file __init__.py). Whether this has anything to do with the problem I don't know. Nick. -- View this message in context: http://osgeo-org.1560.n6.nabble.com/Sextante-tool-box-problems-tp5022297p5022430.html Sent from the Quantum GIS - User mailing list archive at Nabble.com. ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Sextante tool box problems
Victor Olaya-3 wrote That message is not the problem with the buffer, it is another problem. You have a model that includes a SAGA algorithm (it is an example model), and you probably do not have SAGA installed so it complains and it writes it to the log. You problem description should be in the SEXTANTE log, but in the info branch, tagged as GRASS console output. That's where you can find why your buffer it is not working Thanks for the response Victor. I didn't think I needed SAGA to be installed to run GRASS functions from the Sextante tool box. In fact I'm pretty sure that until a few days ago GRASS functions did run from the tool box without SAGA installed. Anyway, I've installed SAGA, enabled it in the Sextante tool box and the GRASS functions still don't work. Which has left me puzzled. I don't have anything in the log tagged Grass console output. I've just tried using grass.v.parallel which failed with the same message as before. The only thing written to the log file was under Algorithm: sextante.runalg(grass:v.parallel,/home/nick/beenham/walk_maps/long.shp,20,20,0,2,1,False,False,458542.246135,459826.641395,168788.919831,170532.062032,0,None) Nick. -- View this message in context: http://osgeo-org.1560.n6.nabble.com/Sextante-tool-box-problems-tp5022297p5022322.html Sent from the Quantum GIS - User mailing list archive at Nabble.com. ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] getting statistics from a raster layer
One other thing, you want to collect statistics for your clipped raster, so when you clip the raster make sure that you tick 'no data value' and enter a value of (say) -3. This will set the value of the pixels in your clipped raster that lie outside of your area of interest to 'null' and they will be ignored when calculating statistics (which is what you want). I think the correct statistics for your area of interest are as follows: STATISTICS_MINIMUM=20.97500038147 STATISTICS_MAXIMUM=22.629600524902 STATISTICS_MEAN=21.829234117232 STATISTICS_STDDEV=0.40600423541182 Nick. -- View this message in context: http://osgeo-org.1560.n6.nabble.com/getting-statistics-from-a-raster-layer-tp5002022p5002891.html Sent from the Quantum GIS - User mailing list archive at Nabble.com. ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] getting statistics from a raster layer
Antonio Silva wrote Following the suggestions I got an error message: Cannot compute bounding box of cutline. when cutting the raster. Just checking, but the raster layer and the vector polygon layer do have the same CRS? You can't cut a raster with a vector unless both have the same native CRS. In other words, both layers must align properly on the QGIS screen with on-the-fly CRS transformation turned off. Nick. -- View this message in context: http://osgeo-org.1560.n6.nabble.com/getting-statistics-from-a-raster-layer-tp5002022p5002582.html Sent from the Quantum GIS - User mailing list archive at Nabble.com. ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] getting statistics from a raster layer
I think the first thing to do is clip the raster to your area of interest using the vector polygon. Raster - Extraction - Clipper. Select the polygon shapefile as the mask layer. To get the statistics load the clipped raster, right-click on it in the layers panel, select Properties and then click the Metadata tab. This will show the mean, min, max and SD, but not (unfortunately) the median. N. -- View this message in context: http://osgeo-org.1560.n6.nabble.com/getting-statistics-from-a-raster-layer-tp5002022p5002057.html Sent from the Quantum GIS - User mailing list archive at Nabble.com. ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] QuickWKT not working in QGIS Master?
Could someone confirm that the QuickWKT plug-in isn't working in QGIS 1.9, under both Ubuntu and Windows? Test polygon below, it's EPSG:27700 if QGIS asks. POLYGON((448609.94 119686.73,448567.98 119730.70,448569.50 119732.00,448581.80 119741.00,448591.50 119747.60,448600.90 119753.70,448623.90 119767.50,448637.20 119775.30,448642.20 119778.40,448644.70 119779.70,448649.40 119781.60,448657.60 119784.20,448660.40 119784.90,448663.60 119785.50,448666.10 119785.80,448671.60 119785.90,448680.80 119785.20,448696.20 119783.60,448723.60 119780.40,448725.80 119780.70,448730.70 119781.90,448737.50 119783.90,448744.10 119786.10,448757.20 119790.90,448767.30 119794.90,448784.90 119802.60,448794.40 119806.50,448805.40 119811.20,448816.40 119816.70,448824.20 119820.90,448832.50 119825.20,448839.30 119818.40,448847.90 119791.60,448850.50 119778.10,448852.20 119768.20,448821.50 119769.40,448810.00 119769.60,448800.60 119769.50,448774.40 119767.50,448760.20 119760.80,448709.20 119741.70,448653.40 119721.60,448645.30 119718.20,448641.00 119715.90,448635.40 119712.00,448634.70 119711.50,448630.00 119707.60,448622.60 119701.20,448620.40 119699.00,448613.40 119691.00,448609.94 119686.73)) Works in 1.8 under Windows. Nick. -- View this message in context: http://osgeo-org.1560.n6.nabble.com/QuickWKT-not-working-in-QGIS-Master-tp5001680.html Sent from the Quantum GIS - User mailing list archive at Nabble.com. ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Transforming Gauss-Krueger 3 to ETRS 89 UTM32N
kmithoefer wrote Thanks a lot! i understand the problem now. I will create a custom projection. It might be more convenient to do an affine transformation, deducting 3200 (32 million) from the easting of each vertex in the shapefile. The QGIS Vector Affine plug-in can do this. Nick. -- View this message in context: http://osgeo-org.1560.n6.nabble.com/Transforming-Gauss-Krueger-3-to-ETRS-89-UTM32N-tp4998294p4998808.html Sent from the Quantum GIS - User mailing list archive at Nabble.com. ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Ftools and MMqgis behave differently
Hi Gerardo, we meet again. Using your vector data I can't replicate the problem here, which two layers should I be using? Nick. -- View this message in context: http://osgeo-org.1560.n6.nabble.com/Ftools-and-MMqgis-behave-differently-tp4998686p4998810.html Sent from the Quantum GIS - User mailing list archive at Nabble.com. ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Measuring line length while drawing
Jakob Lanstorp-3 wrote Is there any way of measuring the line length on the fly while drawing the line? I have a starting point and need to draw say a 1,234 km long vector line on top of a raster map in lat long degrees. Are there other alternatives? Long distances and lat/lon? The alternative might be to use Google Earth. Select the line drawing tool and in the box that pops up click the Measurements tab and then select your units of distance. Then click on your starting point and draw a short line. Then pick up the end of the line and move it. As you do this you will see that the reported line length changes. When you've finished adjusting the line click OK, then save the line as a KML file and load it into QGIS. Horrible really. Nick. -- View this message in context: http://osgeo-org.1560.n6.nabble.com/Measuring-line-length-while-drawing-tp4995620p4995882.html Sent from the Quantum GIS - User mailing list archive at Nabble.com. ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Problems with Custom CRS
Johannes Radinger wrote +proj=lcc +lat_1=45.898919 +lat_2=47.696014 +lat_0=46.8 +lon_0=2.3372291667 +x_0=60 +y_0=220 +no_defs +a=6378249.2 +rf=293.466021294 +towgs84=-168.000,-60.000,320.000 +to_meter=1 Are you sure that the '+no_defs' parameter is in the right place? I've only ever seen this on the end of Proj4 strings. N. -- View this message in context: http://osgeo-org.1560.n6.nabble.com/Problems-with-Custom-CRS-tp4994772p4995030.html Sent from the Quantum GIS - User mailing list archive at Nabble.com. ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Incorrect placement of ABC labels
magerlin wrote But it seems ABC is rather poor at calculating the centroids. I don't think this is the case, so far as I know there is no rule that says that the centroid of a polygon has to lie within the polygon. If the polygon was banana-shaped for example its centroid would almost certainly lie outside of its boundary. Nick. -- View this message in context: http://osgeo-org.1560.n6.nabble.com/Incorrect-placement-of-ABC-labels-tp4992143p4992249.html Sent from the Quantum GIS - User mailing list archive at Nabble.com. ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] digitizing
mikec wrote like ARC Gis is there a way of tracing boundaries when you digitize so that there are no spatial errors? I know there is snapping, but sometimes that doesn't work as well. When tracing lots of abutting polygons my preferred method is to to use lines and polygonize them. It's quick and produces perfect polygons. It also separates the task of digitizing from that of entering attribute data, which I find convenient. See: http://confound.me.uk/maps/ppv4.pdf It's not everyone's cup of tea though. Nick. -- View this message in context: http://osgeo-org.1560.n6.nabble.com/digitizing-tp4984965p4985024.html Sent from the Quantum GIS - User mailing list archive at Nabble.com. ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Dissolve a line layer?
magerlin wrote I've got a road network which is broken down to a lot of very short sections. These I would like to join by the road name to just get one feature per road name. . . Any suggestions? Vector - Geometry Tools - Singleparts to multipart. This should work, unless I'm missing something (which is quite possible). Nick. -- View this message in context: http://osgeo-org.1560.n6.nabble.com/Dissolve-a-line-layer-tp4979880p4980139.html Sent from the Quantum GIS - User mailing list archive at Nabble.com. ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] RE: Qgis-user Digest, Vol 75, Issue 17 - 2. Re: Help: GPS data not showing in correct position
For form's sake, I should start by renaming the CSV file to something that doesn't have spaces, et cetera, for example, 'GPS_Android_points_IKE.csv'. Next, swap the LONG and LAT column headers, these are the wrong way round. When loading the CSV file into QGIS set its CRS to EPSG:4326. Find EPSG:4326 by entering 4326 into the 'Filter' field. Then sent the project CRS to EPSG:27700 and enable on-the-fly. Find EPSG:27700 by entering 27700 into the 'Filter' field. Then load the raster image and set its CRS to EPSG:27700. Nick. -- View this message in context: http://osgeo-org.1560.n6.nabble.com/RE-Qgis-user-Digest-Vol-75-Issue-17-2-Re-Help-GPS-data-not-showing-in-correct-position-tp4976108p4976304.html Sent from the Quantum GIS - User mailing list archive at Nabble.com. ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] OSGB coordinates to WGS84 lat/lon problem
A chap on QGIS at Stack Exchange is having problems with accuracy when transforming from Ordnance Survey grid coordinates to WGS84 lat/lon. He's finding discrepancies in the order of seven metres. Using QGIS 1.7.4, OSGEO4W under Vista I was able to reproduce the problem, but using QGIS Lisboa RC1 under Ubuntu 11.10 produced transformations good to better than a metre. My first reaction was that there must problems with the QGIS 1.7.4 Proj4 parameter string for EPSG:27700, but on checking I found that 1.7.4 and Lisboa use identical strings for this CRS. I'm now at a bit of a loss to understand how following an identical procedure on both systems can produce differing results. If anyone would care to check this, below is the csv file I used for my tests. Station,x,y Inkpen,437346.0,161624.8 Hodmore,468296.3,178184.9 Hindhead,489984.6,135909.7 Under Ubuntu these coordinates transformed to: Inkpen 437346 161624.8-1.465102 51.352478 Hodmore 468296.3178184.9-1.017527 51.498487 Hindhead489984.6135909.7-0.715814 51.115423 Under Vista they transformed to: Inkpen 437346 161624.8-1.4651151.352424 Hodmore 468296.3178184.9-1.017525 51.498435 Hindhead489984.6135909.7-0.715808 51.115362 In my part of the world the differences amount to about six metres on the ground. The Inkpen test point is in fact an old triangulation pillar and the point as transformed by Ubuntu sits exactly on this when viewed in Goorgle Earth. Any ideas? Nick. -- View this message in context: http://osgeo-org.1560.n6.nabble.com/OSGB-coordinates-to-WGS84-lat-lon-problem-tp4965339.html Sent from the Quantum GIS - User mailing list archive at Nabble.com. ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] Re: OSGB coordinates to WGS84 lat/lon problem
Micha Silver wrote I;m getting numbers identical to your Ubuntu results in three tests: QGIS 1.7.4 on Win7, QGIS1.7.4 on Scientific Linux, and also using cs2cs. All the same, and all = to your Ubuntu values. Maybe that will help to smoke out the problem? Thanks for this Micha, though it's left me flummoxed for want of an explanation. The person on SE and I both have the same problem, but if you can't reproduce it then it's obviously not universal. For miked, thanks for the comment, I know about this problem which is why I used as my test points stations from the OS passive stations database whose positions are known accurately. Nick. -- View this message in context: http://osgeo-org.1560.n6.nabble.com/OSGB-coordinates-to-WGS84-lat-lon-problem-tp4965339p4965857.html Sent from the Quantum GIS - User mailing list archive at Nabble.com. ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] Re: OSGB coordinates to WGS84 lat/lon problem
Andy Harfoot wrote Have you tried the convertor here: http://gps.ordnancesurvey.co.uk/convert.asp to see whether the higher accuracy coordinates obtained from QGIS match those obtained using OSTN02? For the record, the Survey gives the following (ETRS89) lat/lon coordinates for the points: Inkpen: 51.3524757 -1.4650872 Hodmore: 51.4984893 -1.0170283 Hindhead: 51.1154179 -0.7157938 I think ETRS89 has drifted about half a metre away from WGS84 at the present time, but even so the transformations done by Lisboa under Ubuntu look very good. It looks as though Proj4 can use grid based transformations like OSTN02 through the use of gsb files. Could it be that this is the case in the higher accuracy situation? I find gsb files at the following location on my Win7 QGIS 1.7.4 install: C:\OSGeo4W\share\proj At present by default QGIS doesn't use a grid-shift file for EPSG:27700. The datum-shift is carried out by the +towgs84 part of the Proj parameter string. I can't see any files in this directory suggesting they are the OSTN02 grid though, and I can reproduce your 'Vista' results as follows, suggesting that my QGIS is using the lower accuracy seven parameter transform. It's not using a grid-shift file. But it's interesting that you get the same poor transformations that I get with 1.7.4 under Visa. Lisboa RC1 under Ubuntu produces much better transformations (for me) but I don't know why this is the case. Nick. -- View this message in context: http://osgeo-org.1560.n6.nabble.com/OSGB-coordinates-to-WGS84-lat-lon-problem-tp4965339p4966416.html Sent from the Quantum GIS - User mailing list archive at Nabble.com. ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] Re: polylines to single lines
Piotr Pachół-2 wrote Is it possible in Qgis or in Sextante plugin to convert line layer with polylines to simple single lines ? It should work as cad command explode. If not may be it would be usefull to add new option (checkbox) in command Multipart to singlepart. Hi Piotr, the 'Split Feature' plug-in will do this. Nick. -- View this message in context: http://osgeo-org.1560.n6.nabble.com/polylines-to-single-lines-tp4958985p4960123.html Sent from the Quantum GIS - User mailing list archive at Nabble.com. ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] Re: Help: GPS data not showing in correct position
Albin Blaschka-5 wrote as far as I can tell from your data, your rasterfile has a problem with its projection: The associated .tfw file you put online had the wrong name (the raster is named ST.tif, therefore the .tfw - file has to be named ST.tfw). So two questions to dig further: Is it the right .tfw file for that raster? And in which projection is the raster - in the .tfw file are just numbers, from which it is hard to guess for me, to which coordinate system they belong to... (UTM or a national grid...) Hum, yes. The raster is for Ordnance Survey 100 x 100 km grid square 'ST' and the TFW world file is for square 'SU'. You need to find the correct world file for the raster (ST.TFW). Put ST.TIF and ST.TFW in the same directory and load ST.TIF. Right-click on ST.TIF in the layers panel and set its CRS to EPSG:27700, then set the project CRS to EPSG:27700 and enable 'on-the-fly'. The next problem is that the CSV file has its latitude column labelled as 'LONG' and its longitude column labelled as 'LAT' so fix this. Then load the CSV file. Here, the points plot near to Evercreech. Regards, Nick. -- View this message in context: http://osgeo-org.1560.n6.nabble.com/RE-Qgis-user-Digest-Vol-75-Issue-15-Help-GPS-data-not-showing-in-correct-position-tp4953370p4954178.html Sent from the Quantum GIS - User mailing list archive at Nabble.com. ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] Re: Closure of forum, one month on.
In the last month of its existence about 130 new topics were created on the forum. It appears that during the same period about 54 new topics tagged 'QGIS' were created on Stack Exchange (SE) GIS. It is of course obvious that there has been an increase in QGIS questions on SE following the closure of the forum, but I think it is unlikely that all, or possibly even most, of the people who used to post on the forum have shifted to SE. However, for obvious reasons there can be no firm evidence to support this proposition; usage statistics are not enough. I wish it well and I'm sure that QGIS at SE will suit many of the more experienced QGIS users very nicely, but I'm also sure it will also put off many newcomers and less experienced users who need a friendly place of first contact where they can ask their questions. But that's enough, I seem to be a lone voice in this discussion so I won't push things any further. Nick. -- View this message in context: http://osgeo-org.1560.n6.nabble.com/Closure-of-forum-one-month-on-tp4945755p4948730.html Sent from the Quantum GIS - User mailing list archive at Nabble.com. ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] Closure of forum, one month on.
The forum closed a month ago and I think it's time for a look at how the new arrangements are working. To me, it appears self-evident that the number of postings made on Stack Exchange by newcomers and less experienced users has not increased significantly since the forum closed. So where are these questions being asked and answered now? If anywhere; perhaps people are just walking away. Guessing at numbers, something like four or five new topics were started every day on the forum but it is obvious that this traffic has not transferred itself to SE (or to this place) as intended. Nick. -- View this message in context: http://osgeo-org.1560.n6.nabble.com/Closure-of-forum-one-month-on-tp4945755.html Sent from the Quantum GIS - User mailing list archive at Nabble.com. ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] Re: Closure of forum, one month on.
Nathan Woodrow wrote The last query that I just posted should be able to do it once the data is updated to include April. Currently it only includes up till March. The site is updated monthly so it should be there soon. Thanks for this, it crossed with my last. Does 'Posts' equal 'New Questions' by the way? Nick. -- View this message in context: http://osgeo-org.1560.n6.nabble.com/Closure-of-forum-one-month-on-tp4945755p4946059.html Sent from the Quantum GIS - User mailing list archive at Nabble.com. ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] Re: How to specify a local coordinate system
If you're not bothered about your data mapping properly onto the 'real world' you could use any projected CRS (projected, not lat/lon). All CRS's are just simple xy grids, you could use my local one, EPSG:27700. Better though to transform (affine) your data to an appropriate CRS. -- View this message in context: http://osgeo-org.1560.n6.nabble.com/How-to-specify-a-local-coordinate-system-tp4917612p4929987.html Sent from the Quantum GIS - User mailing list archive at Nabble.com. ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] Re: add geometry column error
Piotr Pachół-2 wrote I have problem with adding geometry column to some kind of shapefiles. After executing the function 'export/add geometry column' all xcoord and ycoord values equals zero. I can confirm this behavior, QGIS 1.7.4, 32-bit Vista. Things work as they should in Master under Ubuntu 11.10. -- View this message in context: http://osgeo-org.1560.n6.nabble.com/add-geometry-column-error-tp4910368p4912798.html Sent from the Quantum GIS - User mailing list archive at Nabble.com. ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] Re: Estimating elevation points from contour data
Hi Des, rather than using your contour data to make a DEM you might be better off with OS OpenData DTMs and using the point sampling tool on these (you're after what, spot heights?). Where the landform hasn't changed since back in the Neolithic when the OS DTMs were made they're not bad. Nick. -- View this message in context: http://osgeo-org.1560.n6.nabble.com/Estimating-elevation-points-from-contour-data-tp4910663p4912903.html Sent from the Quantum GIS - User mailing list archive at Nabble.com. ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] Re: GPX, OS Grid References and Google Earth
Hi Des, just to add a lttle to what Lene wrote. As mentioned, import the GPX file to QGIS, then save it as a EPSG:27700 projected shapefile. To do this right-click on the GPX file in the layers panel, go 'Save As...' and set 'Format' to 'ESRI Shapefile'. Set the CRS for the new shapefile by clicking to the right of 'CRS', and picking 'Selected CRS', then press the 'Browse' button. In the window that appears enter '27700' (without the quotes) in the 'Filter' field. Highlight 'OSGB 1936 / British National Grid' in the list below and press 'OK'. Then give the new shapefile a name and click 'OK'. Next, load the new shapefile into QGIS, right-click on it in the layers panel and go 'Set Project CRS from Layer'. You can now add OS grid coordinates to the shapefile's attribute table. To do this, highlight the layer in the layers panel and (from the top menu bar) go Vector - Geometry Tools - Export/Add geometry columns. All you need to do here is tick 'Save to new shapefile', give the new file a name and press 'OK'. Now load the new shapefile and have a look at the attribute table (right-click on the layer in the layers panel and go 'Open Attribute Table'). You should find that it contains two new columns, one for OS eastings (x-ordinates) and the other for northings (y-ordinates). The ordinates form OS grid coordinates, not grid references (ie. SD4568798345 will be shown as 345687 498345, for example). QGIS doesn't know about Ordnance Survey grid references I'm afraid, but if this is a problem then come back. Nick. -- View this message in context: http://osgeo-org.1560.n6.nabble.com/GPX-OS-Grid-References-and-Google-Earth-tp4907061p4909729.html Sent from the Quantum GIS - User mailing list archive at Nabble.com. ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
