Re: [Qgis-user] QGIS problem with GeoPackage database views
Marcus Blake <marcusthemapmaker@...> writes: ... > Things that do not work... > > 1. QGIS is not displaying the Attribute Table of a GeoPackage view correctly. Attribute values are repeated for a single row. > 2. Any Select operation that is applied either to the attributes or the geometries results in the whole layer being selected. > > In summary it looks like whilst the geometries of a GeoPackage view are being interpreted correctly the link to the underlying attributes in a view is not. Incidentally, neither the latest version of ArcGIS or MapInfo Profession can interpret views in GeoPackage either and this has been identified as a bug by both organisations. > > Any help from some one who knows their way around how GeoPackage is interpreting views would be gratefully received. I made some quick tests by making queries directly with SQL from spatialite-gui SELECT * FROM "sa1_b01_map_v" order by SA1_MAINCODE_2011 limit 100; Looks good with no duplicates. select * from "sa1_b01_map_v" where SA1_7DIGITCODE_2011=1135752; One row returned. You should give more detailed examples about what you do, what you get, and what is the expected result. -Jukka Rahkonen- > Marcus. > > > ___ > 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 ___ 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] Is QGIS showing the records with geometry NULL
Nicolas Cadieux <nicolas.cadieux@...> writes: > > > Hi, > Is it possible that the 2 missing records were deleted in another GIS? There is an issue with deleting records in shape file as there are many ways to do that. If the record were deleted in another GIS, they may show up (or not) in another software. Could that be it... > Nicolas Hi, I suppose that Andrea means a valid situation with real existing features which just do not have geometry. They are valid in shapefiles but many GIS software have difficulties in dealing with them. Naturally they cannot be showed on the map and spatial queries can't find them but they should be found from attribute view and be editable there. -Jukka Rahkonen- ___ 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] CenterLines fom a Polygon?
Andreas Neumann a.neumann@... writes: Hi Mike, No - QGIS does not have such functionality, and I also think that GRASS does not have such an algorithm. If you have a fairly new Postgis, you may want to try ST_StraightSkeleton(geometry) - see http://postgis.net/docs/ST_StraightSkeleton.html - which uses CGAL. Seems like OpenJump has a module to do skeletonization (google for skeletonizer). Some screen captures of the OJ skeletonizer in this gis.stackexchange answer http://gis.stackexchange.com/questions/114541/extracting-centerline-of-a-complex-polygon-in-postgis-python/114623#114623 -Jukka Rahkonen- ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Add WMS in QGIS gives an error with Map request failed [error:Host http not found url:http://http//
Strunck, Alexander GIZ PS alexander.strunck@... writes: http://http// and the part with the port /:11188 . How can I fix the problem??? Thank You Hi, I would try if it works by checking Ignore GetMap URL reported in capabilities from the connection details of that WMS server. -Jukka Rahkonen- ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Add WMS in QGIS gives an error with Map request failed [error:Host http not found url:http://http//
Strunck, Alexander GIZ PS alexander.strunck@... writes: Dear Mathias, Thank you for the suggestion. I tried this already. If I enter only [IP]:11188/mapviewer/wms QGIS than changes it into / Hi, I can't reproduce with a Geoserver WMS that is running in a non-default port by using connection http://[IP]:10080/geoserver/wms Without getting an access to that certain WMS or some other Oracle server that shows the same odd behaviour and is open for everybody it is hard to help you. You can still do GetCapabilities request and study carefully the response. I think that the most probable reason is a wrong GetMap URL that the service is announcing but unchecking the cross as you already did should help in such case. -Jukka Rahkonen- ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Check geometry validity tools
Salvatore Larosa lrssvtml@... writes:
please, if it is not a sensitive data would be useful if you could
share a sample of the dataset.
my guessing here is that you should run the make valid script (lwgeom
algotithm by processing plugin) before.
Hi,
Such data are easy to acquire because OpenStreetMap has loads of three-point
(A-B-A) polygons. I have been trying to create such artificially sometimes
because they make trouble with most other software despite Mapnik but I
haven't been successful yet. It is impossible to digitize a three point
polygon with QGIS or OpenJUMP, and SQL that should yield A-B-A polygon leads
to NULL in Spatialite and to an error with PostGIS.
select geomfromtext('POLYGON ((0 0,1 1,0 0))');
-Jukka Rahkonen-
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Re: [Qgis-user] zoomtopoint.py
Vincent Schut schut@... writes: Hi Mike, I'm not familiar with this zoomtopoint.py, however, your coordinates do not seem to match your projection. EPSG 4326 is geographic lon, lat in degrees, so its range is from -180 to 180 (x) and -90 to 90 (y). The numbers you put as X and Y seem more appropriate for a meters based projection. Maybe try some real coordinates in degrees, or change your projection... You can familiarize yourself with the script by reading the link http://www.qgis.nl/2014/07/10/qgis-processing-scripts-gebruiken/?lang=en that was a little bit farther in the question. -Jukka Rahkonen- Best regards, Vincent. ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Help with Ordnance Survey SLD's for OS Mastermap
David James david@... writes: I should perhaps have said that I have the OS MM sample data in a PostGIS database. The OS distributes SQL files with the SLD dfiles, but those files are targetted at an Oracle database. I found similar SQL scripts targetted at PostGIS at https://gist.github.com/tjmgis/6184358. Links in this mail from Geoserver-users may also be useful http://osgeo-org.1560.x6.nabble.com/Release-SLD-s-for-Ordnance-Survey-data-td5157642.html -Jukka Rahkonen- ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] ogr2ogr, osm, and spatialite
Thomas Endres endres.thomas@... writes: I have downloaded north-america-latest.osm.pbf from geofabrik and am struggling trying set this up for use in QGIS. My hope is to create a spatialite db but I receive the following error repeated over a dozen times using the following command: ogr2ogr -f SQLite -dsco spatialite=yes -gt 2 --config OGR_SQLITESYNCRONOUS OFF north-america.sqlite north-america-latest.osm.pbf Warning 1: organizePolygons() received an unexpected geometry. Either a polygon with interior rings, or a polygon with less than 4 points, or a non-Polygon geometry. Return arguments as a collection. My search for a fix has proven fruitless after having the same outcome from a few attempts. I am left with a 33.1GB file which Spatialite GUI can see but everything hangs when trying to do anything with GIS. Hi, Add -skipfailures to your command and have a new try. If that does not work try to do import layer by layer and add -sql select * from multipolygons where IsValid(geometry)=1. -Jukka Rahkonen- ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] ogr2ogr, osm, and spatialite
Even Rouault even.rouault@... writes: Le dimanche 31 août 2014 21:50:31, Jukka Rahkonen a écrit : Thomas Endres endres.thomas at ... writes: Actually, this warning is just a warning, and not a critical error that will stop conversion. When this occurs, the way/relation will be skipped. Due to the way the OSM database is done, it is possible to have non-valid polygons, and indeed there are such polygons. So you can safely ignore those warnings about organizePolygons() Then the database is probably OK but Thomas has still a real problem with it and QGIS. Does QGIS possibly do some heavy queries for getting layer extents or some other metadata like that? The 33 GB Spatialite file is biggish but I have been testing one 250 GB Spatialite db and if works well if queries are selective and there are indexes to support those. -Jukka Rahkonen- ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] OpenStreetMap Error
Andre Joost andre+joost@... writes: There are two ways to use OSM in QGIS: 1) by downloading OSM raw data with Vector - Openstreetmap 2) by using the Openlayers plugin, which will install into the web menu. Hi, There is also a third way which is to open OSM data with GDAL/OGR. Usage: Add vector layer - Open an OGR supported Vector Layer - path to OpenStreetMap .xml or .pbf file. OSM does not seem to be listed as a supported file format at least in QGIS 2.2 but it works still. The manual page of OSM driver is http://www.gdal.org/drv_osm.html. -Jukka Rahkonen- ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] QGIS: Reduction of resolution via pyramids only for defined scale range
Julian Schall j.schall@... writes: Hello members of the mailing list, I would appreciate help on the following problem: I would like to improve the performance of a raster layer. Of course I can build pyramids for that purpose. But in the scale ranges from 1:1 to 1:25.000 I need maximum resolution and detail. In this scale range, the performance is sufficient even without pyramids. Ideal would be that the pyramids respectively the reduction of the resolution with improvement of performance is only applied to scales smaller than 1:25,000. Is this possible in QGIS? Thanks for helpful answers! Kind regards Julian Schall There are check boxes for overview levels in the Build overviews panel. Level 2 means double the original pizel size etc. Leave for example levels 2 and 4 unchecked. However, level 2 means 25% extra disk space but level 4 only 6.25%. Thus it may not make sense to skip other levels than 2. Remember to compress also the overviews and test with external overviews which you can easily delete and continue with new tests. Internal overviews can be removed so that they are no more used but operation does not make image files smaller. ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] cannot save my layer data...???
Kevin Caldwell mtssea@... writes: I'm having a serious error I've never seen before on trying to save a large polygon file with either 'save layer edits or on 'toggle' of my shapefile. There are 100s of polygons within a 5000 acre tract, so I'm really hoping this has a solution. I'm getting these errors: 1) Commit errors: Could not commit changes to layer BCW_natcoms_1-31-2014 - this occurs in the upper band of the field of view 2) (On clicking show more in this error note I get: Could not commit changes to layer BCW_natcoms_1-31-2014 Errors: ERROR: 21 feature(s) not deleted. ... Does anyone know how I can save this file? I've done literally hours of work and have saved somewhat recently but this last round of edits would appear to be lost if I cannot save this. Thanks so much for any help you can provide. Save the layer into a new shapefile. Re-open what you have changed now and compare with your back-up copy. Perhaps you can save some work with copy-paste. It feels like your previous save has been at least partially successful because some features have been deleted but on QGIS side the deletion has not been confirmed. Let's hope that at least part of inserts and edits have been actually saved also. -Jukka Rahkonen- ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Is there way to print out a layered PDF-document?
Järnefelt Jouko Jouko.Jarnefelt@... writes: Hey all. I have a simple question for which I haven’t been able to find answer. Is there way to print out a layered PDF-document? Thanks for your help! Not directly but you can prepare the raster and vector layers with QGIS and create PDF with GDAL. It is a bit tricky for the first time but I hope that this helps http://latuviitta.org/documents/Geospatial_PDF_maps_from_OSM_with_GDAL.pdf Other alternative is to use SkyJUMP http://sourceforge.net/projects/skyjump/ OpenJUMP has also the same SkyJUMP printing utility as a plugin http://sourceforge.net/projects/jump-pilot/files/OpenJUMP_plugins/Printing%20Plugins/SkyPrinter%20Plugin/1.0.0/ The plugin works but installation is tricky at the moment: - place SkyPrinterPlugIn-1.0.0.jar into /lib - move or copy itext-2.1.7.jar from /lib/ext into /lib - edit default-plugins.xml and add plug-incom.isa.jump.plugin.PrintPlugIn/plug-in into FILE menu section SkyPrinter does not have advanced features but it prints the layers as they are in the OpenJUMP into PDF so that it is possible to control the layer visibility in Acrobat reader. SkyPrinter does not make geospatial PDF. -Jukka Rahkonen- ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Symbology Export
Jonathan Moules jonathanmoules@... writes: Hi Andreas,Thanks for further testing. I figured if something as simple as a fill wasn't implemented then catogorisation probably wouldn't be. A further thought - not all vector formats support styling (shapefile being the most notable exception). Should it remain a general option or be moved to Datasource Options for any supported style? I lean towards the later option myself. Well, shapefiles may not support styling or then they do. Read page 15 of the document http://latuviitta.org/documents/Geospatial_PDF_maps_from_OSM_with_GDAL.pdf There I show how it is possible to use OGR_STYLES with shapefiles and convert the result into a geospatial PDF map. I would rather say that only a few software support styling vector data with OGR_STYLES. -Jukka Rahkonen- ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Can some one help me to convert a .bil file in a shape file?
NYA Edouard edouardnya@... writes: Thank you for the try. I already tried this way with no succes. Since yesterday, I launch a try and till now, I have no result (4G RAM, 3,2 Ghz). The thing takes too long. Still looking for solutions, NYA Here is a command that may help you: gdal_translate -of GTiff -co tiled=yes -co compress=deflate -projwin 24 68 25 67 hwsd.bil clipped.tif It clips one degree wide and high part of the hwsd.bil file and saves it into a small GeoTIFF. Learn more about what the command does from http://www.gdal.org/gdal_translate.html and http://www.gdal.org/frmt_gtiff.html -Jukka Rahkonen- ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Spatialite VIEW in QGIS question
Bernd Vogelgesang bernd.vogelgesang@... writes: Guys, this is a very sad topic and I really can't understand how people can work with 1:n data even on the most basic level under these circumstances ... Or doesn't anyone work with 1:n data? Well, the the world I'm living in is full of that ... After nearly one week of trial and error, I am giving up now. Hi, GIS it to large extent based on principle one geometry - one set of attributes. The bird observation case would handle easily a situation where each observation has an own point geometry. Your case is rather often handled in two steps: user clicks on a polygon, application gets an ID for the area and sends a query to the database, reads the observations and shows them for the user. I know that BirdLife of Finland has been building some bird observation stuff on top of QGIS and WFS. Maybe you can try to find some contact there. -Jukka Rahkonen- ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Wrong scale in .jpegw world file
Stipe Vrankovic svrankovic@... writes: Hi, after formatting my PC I have problems with georeferenced raster. I'm using local WMS server to dowonlad rasters. In QGIS everything seems normal, but when I open picture in ZWCAD using .jpegw(.tfw) file (for georeferencing) I get raster in good position but with wrong scale(bigger than supposed). Any suggestions? Thanks You in advance! We need more information. Can you show us - the WMS GetMap request that you have used for capturing the image - corresponding jpegw file - what gdalinfo reports about the image -Jukka Rahkonen- Stipe ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Saving GPX as SHP looses the time part of the (date)time field
Alexandre Neto senhor.neto@... writes: I got into this problem early today. Trying to save a GPX as SHP I loose the time part of the time Field, and only the date is saved as a string. Instead of getting a string like this: 2013-11-21T10:00:25 all I get is 2013-11-21. I suspected that this had something to do with GDAL\OGR, and I found a bug about this exact problem. http://trac.osgeo.org/gdal/ticket/2968 In the end of the ticket report, a possible solution is given to allow ogr2ogr to cast the DateTime filed as a string, I think this might be preferable within QGIS, to ensure no data is lost. Should I fill a Feature request in Redmine? Hi, I believe that this is not an accurate description: only the date is saved as a string but it is rather only the date is saved as 'date' I am not sure how much it is a bug because the dbf format that shapefile is using for storing the attributes simply does not support DateTime but only Date. There are two alternatives which you have recognized: to keep the datatype close to original (DateTime - Date) and loose the time part, or change the datatype into string. Neither solution can make everybody happy. One solution could be to make it selectable. For some use cases it could be nice to write the date part into date column and only time part into a separate string column. But if you do not necessarily need just shapefiles a better alternative would be to convert data into Spatialite. -Jukka Rahkonen- ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Transformation using NTv2 grids
Burgstaller Stefan Burgstaller@... writes: Hi, is it already possible to reproject shape-files using NTv2 grids? I was looking for appropriate plugins, help documents and already available tools but I have not found anything. Since the federal states in Germany start to convert their geospatial data from Gauss-Kruger to ETRS89 with NTv2 grids this topic becomes more and more urgent. Hi, Just had a try last week after getting a shift grid file kkj_eureffin.ct2 for Finnish Gauss-Kruger - ETRS89. Usage is like this (I gave all the proj parameters by hand so I knew that just they were used): ogr2ogr -f ESRI Shapefile -s_srs +proj=tmerc +lat_0=0 +lon_0=27 +k=1 +x_0=350 +y_0=0 +ellps=intl +towgs84=-96.0617,-82.4278,-121.7535,4.80107,0.34543,-1.37646,1.4964 +units=m +nadgrids=.\kkj_eureffin.ct2 -t_srs +proj=utm +zone=35 +ellps=GRS80 +units=m +towgs84=0,0,0,0 +no_defs accurate_conversion_to_epsg_3067.shp original_epsg_2393.shp Took 2 minutes with a laptop to convert 1.2 million simple polygons. -Jukka Rahkonen- Greetings, Stefan Burgstaller ___ Qgis-user mailing list Qgis-user@... http://lists.osgeo.org/mailman/listinfo/qgis-user ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] import osm-file to qgis
Richard McDonnell richard.mcdonnell@... writes: Hi, One solution would be to download the shapefile for the area you are interested in, this should, I assume have all the required fields. You should be able to download that from the same source. I hope this is of help. Regards, Hi, QGIS, GDAL and OSM users should also remember that there is an excellent GDAL OSM driver http://gdal.org/ogr/drv_osm.html. I prefer using it together with Spatialite http://www.gdal.org/ogr/drv_sqlite.html. Pay attention to performance hints and handling country wide extracts will be pretty fast. -Jukka Rahkonen- ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] How to buffer a line with different distances for left/right sides
Goyo goyodiaz@... writes: Spatialite has a SingleSidedBuffer function. http://www.gaia-gis.it/gaia-sins/spatialite-sql-4.1.0.html#p14b I think it may be available for PosgreSQL too. That is still only half of the solution but doing left side buffer and right side buffer with different buffer widths and combining those tho with union function could give a desired end result. -Jukka Rahkonen- Goyo ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] WFS caching behaviour
Jonathan Moules jonathanmoules@... writes: Hi Jukka, You do seem to like Fiddler! No, the name of the software is not important but I like to know what really happens and with OGC services it means that one must see the messages which client and server are sending. I was using my web-server logs, however Fiddler is confirming that the WFS isn't making new requests when I zoom in/our except when I'm at distance zoom's (it should do it at all zooms). But if someone starts to fix this, please do not make it to send a new GetFeature request with every mouse roll step. So bug report it is. And more to come I bet. -Jukka- Cheers, Jonathan ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] WFS caching behaviour
Jonathan Moules jonathanmoules@... writes: Hi List,Before I report this one as a bug, I figured I should check. What's the desired behaviour of the WFS client in QGIS in respect to caching results versus making new requests. Example: WFS server only returns 500 results for any given request. There are 51639 features in the layer. - If I load the layer using the Cached checkbox as ticked, then QGIS only loads 500 features. Fine. - If I then add the layer again, but with cached unticked, then QGIS only loads 500 features - but they're 500 different features. Fine. Except in both cases when I zoom in/out, the features don't change; QGIS doesn't make new requests. I thought it was supposed to, at least with the uncached version? Both appear to behaving the exact same way to me. Am I doing something wrong? Hi, Made a trial with v. 2.0.1 and checked with Fiddler2 proxy what happens (I recommend). - With caching a plain GetFeature is sent and you will get the 500 first records. - Without caching QGIS adds a BBOX filter and applies the extents of the current map view. You will get the first 500 records within the box. - After zooming/panning a new request with BBOX filter gets fired. I can't say why QGIS does not send new features for you. But you a the one who should absolutely install Fiddler or some other logging proxy and you can do loads of wonderful bug reports in the future. -Jukka Rahkonen- Thanks,Jonathan This transmission is intended for the named addressee(s) only and may contain sensitive or protectively marked material up to RESTRICTED and should be handled accordingly. Unless you are the named addressee (or authorised to receive it for the addressee) you may not copy or use it, or disclose it to anyone else. If you have received this transmission in error please notify the sender immediately. All email traffic sent to or from us, including without limitation all GCSX traffic, may be subject to recording and/or monitoring in accordance with relevant legislation. ___ Qgis-user mailing list Qgis-user@... http://lists.osgeo.org/mailman/listinfo/qgis-user ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] QGIS Georeferencer and Transparency
Andreas Neumann a.neumann@... writes: Hi, Some of my maps I georeference are rotated approx. 45 degrees because they did not point to the north before georeferencing. This is desired - however - the resulting file has a huge black background as a result of the rotation. I tried with the option use 0 for transparency if necessary - which helped - but the map already contains black pixels and the result is that I have a lot of tiny transparent pixels in the map, next to the transparent background I wanted. Is there a way to set this transparency to a custom RGB value that I know it is not yet used within the map? Hi, Don't let QGIS to do the warping but just push the button and create the GDAL commands. Then you can edit the gdal_translate command and have total control over all the features it supports http://www.gdal.org/gdalwarp.html. You may be able to set -dstnodata to some value that does not exist in your data, for example 0 0 255 for total blue. Or then you can add alpha channel with -dstalpha. Unfortunately you can't edit the command and run it as edited directly from the georeferencer but you must run it in a separete GDAL command window. -Jukka Rahkonen- ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Using qcl filter with WMS
Henning Jagd hjagd11@... writes: Hi List,I am using QGIS 2 to view some WMS maps from a Geoserver. I want to filter the data using a CQL_FILTER option in the request, but cannot figure out how to do this in QGIS? I tried using the python console and adding the filter as a parameter in a qgis.utils.iface.addRasterLayer() call, but this didn't seem to work. Any other ideas on how I could get this to work? I have not tested, but it might work if you create a new WMS connection and include the CQL filter part into the WMS base URL. You must check the first selection box for so that the GetMap that is advertised by the server will not be used. I think that some easy way to add and edit vendor parameters for each WMS layer would be nice to have. It could be used for CQL filter, SLD, SLD_BODY etc. -Jukka Rahkonen- ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Weekly builds and JP2 files
Jonathan Moules jonathanmoules@... writes: Anyone? On 11 December 2013 17:04, Jonathan Moules jonathanmou...@warwickshire.gov.uk wrote: Hi List, A question about the weekly builds (www.qgis.org/downloads/weekly). They seem to struggle with loading JP2 files using the usual raster dialog. First they're incredibly slow, but on top of that when they do load they tend to be some sort of horrible mess of lots of black of random colours in a griddish pattern or similar. Do the weekly builds not include a functional JP2 reader? The same rasters work just fine in the stable release 2.0.1. Hi, Check what drivers are baked into GDAL. In Windows you can go to QGIS Dufour directory, set the environment by running osgeo4w.bat and then you can list the JP2 drivers as C:\Program Files\QGIS Dufourgdal_translate --formats |find JP2 JP2ECW (rov): ERDAS JPEG2000 (SDK 5.0) JP2OpenJPEG (rwv): JPEG-2000 driver based on OpenJPEG library JP2ECW is fast and JP2OpenJPEG is sometimes almost usable. JP2KAK is very good but that you can't get without Kakadu license. JP2MrSID used to be fast also but I do not know what is the status with the license. If there are several drivers for JPEG2000 GDAL is using the first on the list. You can skip a driver by setting GDAL_SKIP environment. Thus, if I would like to have a try with JP2OpenJPEG I should run SET GDAL_SKIP=JP2ECW first. No idea really how and where I should do it so that QGIS starts with that setting. -Jukka Rahkonen- ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] Georeferencer to create temp file as .VRT
Hi, Georeferencer creates and runs gdal_translate and gdalwarp commands like here: gdal_translate -of GTiff -gcp 461.252 682.521 2.54e+06 6.69e+06 -gcp 6355.1 671.222 2.55e+06 6.69e+06 -gcp 6367.18 6586.15 2.55e+06 6.68e+06 -gcp 472.062 6599.32 2.54e+06 6.68e+06 C:/Users/test/test_scan.jpg C:/Users/test/AppData/Local/Temp/test_scan.jpg gdalwarp -r near -order 1 -co COMPRESS=DEFLATE C:/Users/test/AppData/Local/Temp/test_scan.jpg C:/Users/test/test_scan.tif The first gdal_translate creates a temporaty file as an uncompressed tiff file. However, it is unnecessary to write a new physical image file. Instead it would be usually much faster and thus better to write the temporary output as GDAL .VRT file. VRT file is a short text file (about 2 kB in size) that contains a reference to the original image file. I know that I can catch the commands, edit by hand and run from GDAL command line afterwards but average users probably do not know that. -Jukka Rahkonen- ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Four band raster displaying funny
Jonathan Moules jonathanmoules@... writes: Hi List, I've got a 4 band raster aerial photography (RGBI) that comprises lots of tiles. I've merged some of the tiles together with: gdal_merge -o 1.tif -of GTiff -co TILED=YES -co BIGTIFF=YES -co COMPRESS=JPEG -co JPEG_QUALITY=50 -co BLOCKXSIZE=512 -co BLOCKYSIZE=512 --optfile tiff_list.txt Are you sure that after running that command you have a 4-band image? I have believed that JPEG compression can be used only for 1- or 3-band images. What does gdalinfo report about your image? I would have a try by using LZW or deflate compression and annex for example a screenshot about the settings you have been using for selecting the bands and adjusting histogram stretching etc. -Jukka Rahkonen- ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Four band raster displaying funny
Jonathan Moules jonathanmoules@... writes: Further testing indicates that the same (optimal) result can be had using a combination of a vrt and gdal_translate without having to manually bother with memory management. Hi, I can confirm that question is in GDAL which by default considers four band images as RGBA which is also documented in http://www.gdal.org/frmt_gtiff.html The following gdal_merge command gives a good result when source bands are in four separate tiff files and it is possible to select bands 1-2-3 for natural colour or 4-2-1 for false colour infrared in QGIS. gdal_merge.py -separate -of GTiff -co photometric=rgb -co compress=jpeg -o fourband_rgb_jpeg.tif 1.tif 2.tif 3.tif 4.tif -Jukka Rahkonen- ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] filter on SELECT DISTINCT
Matt Boyd mattslists@... writes: Hi Group,I've a set of polygons in a sqlite file. Some of the adjacent polygons have the same name, others don't. I only want to display the name once. I'm attempting to do this by copying the layer, then filtering on the label column. label in (SELECT DISTINCT label FROM gippsland_oilgas_fields_mga55) but, it's not filtering, I can either get all polygons or none. It's probably a simple thing in my sql I'm missing (it's been a while since I did this). Hi, You select now all distinct label values that exist and then all features with any of them which means that everything gets selected. For selecting only one row from each group you can use something like select max(rowid), key, value from labeltest group by key I would consider making an extra attribute to the data for selecting which polygons will be labeled. It could be popolated for example with update labeltest set label_this='true' where rowid in (select max(rowid) as rowid from labeltest group by key) -Jukka Rahkonen- ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Error in Georeferencer
Agustin Lobo alobolistas@... writes: I'm finding wrong, distorted results with qgis 2.0 georeferencer. We've tried with the same set of gcp's in envi and the same polynomial (deg 2) and there the results are correct, but with qgis the result is very distorted. Actually, the errors represented by the red segments in the georeferencer do not correspond with the actual gcps displayed on the reference image in Qgis main display. See an snapshot here: https://dl.dropboxusercontent.com/u/3180464/georef_error.jpeg It looks like if the polynomial were not correctly fit? I've run the gdal commands on the terminal and the result is the same, so this could be a gdal problem. Has anybody found the same problem? Just checking before reporting. Please send the exact GDAL command that gets created and even better if you can put somewhere an original small sample image and expected result that you get from envi so someone can repeat. And for comparison everything that is needed to repeat what you did with envi too if someone happens to have that software available. -Jukka Rahkonen- ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Problem with WMS 1.1.1 data providers in QGIS 2.0.1
Richard Duivenvoorde rdmailings@... writes: On 21-10-13 20:07, Miguel Ángel Castro wrote: I am using QGIS 2.0.1 standalone installed in a Windows 7 64 bits system. Example of WMS datasource: (datasource WMS 1.1.1) EPSG:32628 http://idecan2.grafcan.es/ServicioWMS/EspNat In layer properties/metadata you can see the information from datasource, but no display the layer (not load data) in canvas. In log messages: Map request error (status: 200 getDouble(): Symbol definition error. Parsing error near (96): (line 1). Does anybody have an idea what is the problem? Hi Miguel, the error message that you see is a (Minnesota) Mapserver error message. Somewhere in the style definitions it expects a number (or not). This url I get from QGIS in debug mode, and gives you your error: http://idecan2.grafcan.es/ServicioWMS/EspNat?SERVICE=WMSVERSION=1.1.1REQUEST=GetMapBBOX=152208.544610834447667,2940195.98510535480454564,692329.70807293173857033,3376338.62686863588169217SRS=EPSG:32628WIDTH=670HEIGHT=541LAYERS=EENNSTYLES=FORMAT=image/pngDPI=96MAP_RESOLUTION=96TRANSPARENT=TRUE Bug if I remove the DPI=96MAP_RESOLUTION=96 part from it, I get a map: http://idecan2.grafcan.es/ServicioWMS/EspNat?SERVICE=WMSVERSION=1.1.1REQUEST=GetMapBBOX=152208.544610834447667,2940195.98510535480454564,692329.70807293173857033,3376338.62686863588169217SRS=EPSG:32628WIDTH=670HEIGHT=541LAYERS=EENNSTYLES=FORMAT=image/png I'm not familiar with the exact WMS-standard, but as most WMS servers I know (and use) can handle these two query parameters from QGIS, I think it is a Mapserver configuration problem/error. You cannot let QGIS remove those params I think. Hi, That certain server is a pretty old Mapserver v. 5.0 and it does not like the non-standard vendor parameter MAP_RESOLUTION=96. Fresh Mapservers do not fail because of that and actually since version 6.0 Mapserver supports vendor option MAP_RESOLUTION. According to WMS standard servers should quietly skip extra parameters so principally there is a bug in Mapserver 5.0. However, I do not like that QGIS is adding always its own vendor parameters and users do not have a way to turn off the non-standard parameters. I have two reasoning for this: 1) MAP_RESOLUTION is not defined in the standard and for server A it can mean something different than for server B while QGIS may be awaiting still something else. 2) Even vendor options should be skipped, we have here an example that some servers may fail in skipping them. Nobody will fix Mapserver 5.0 and even it is wrong, it is the QGIS user who suffers now. User can only ask server admin to update (it may take a while) or switch off QGIS and use another WMS client like OpenJUMP. For my mind it should be possible to configure QGIS WMS to run in a safe mode and use only those parameters which belong to WMS standard. -Jukka Rahkonen- ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] reprojection troubles
Andreas Neumann a.neumann@... writes: Hi, I was trying to convert natural earth 110m layers from EPSG 4326 to EPSG 3857. Two of the layers (ocean and land) fail to convert with the following error: Error 6 Feature write errors: Failed to transform a point while drawing a feature with ID '8'. Writing stopped. (Exception: forward transform of (3.141593, -1.570796) PROJ.4: +proj=longlat +datum=WGS84 +no_defs +to +proj=merc +a=6378137 +b=6378137 +lat_ts=0.0 +lon_0=0.0 +x_0=0.0 +y_0=0 +k=1.0 +units=m +nadgrids= at null +wktext +no_defs Error: tolerance condition error) Is there anything I can do about this tolerance condition error? A guess: perhaps those Natural Earth layers contain vertices close to the poles? EPSG:3857 is valid only between -85 - 85 degrees. If that is the case it might to help to cut your vectors a bit at high and low latitudes. -Jukka Rahkonen- ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] QGIS 2 and interlis format
Daniel.Gnerre@... writes: Hi all, I would like to display interlis data in QGIS 2, but I can't find the format in the list of vector data formats. In QGIS 1.8, the format is in the list (INTERLIS 1 [OGR]). OGR supports this format, why does QGIS 2 not ? I tried to display all files *.* and select an itf file, but QGIS 2 fires an error. QGIS version : 2.0.1 QGDAL/OGR version : 1.10.0 Thanks, Daniel Hi, Most probably GDAL is not built with Interlis driver. There are lots of OGR formats which are not built by default and Interlis seems to be one of those http://www.gdal.org/ogr/ogr_formats.html -Jukka Rahkonen- ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] QGIS 2.0 and reading OSM through GDAL
Hi, I ask this because I am on 32-bit Windows and therefore my QGIS 2.0 comes with GDAL 1.9 and I can't test myself yet. Question is: How well QGIS 2.0 supports reading OSM data with the GDAL read-only OSM driver http://www.gdal.org/ogr/drv_osm.html? The driver is fast with medium sized datasets. It takes 3 minutes to convert everything from a Finnish OSM data (150 MB as .pbf) into Spatialite database. GDAL driver creates 5 OGR layers from the OSM data and reading them as is may not make much sense with QGIS but with some query wizard users could select a subset of OSM data and convert those into normal GIS layers in QGIS. The wizard might help users by creating a list of columns which can be used for quories by parsing the osmconf.ini file. Then there should be an editable SQL query box for the final query. The contents of the box would be converted into GDAL/OGR SQL clause. The result would be something similar than this ogr2ogr command which selects all lines with any highway tag from an OSM file and saves them into shapefile. ogr2ogr -f ESRI Shapefile -dialect sqlite -sql select * from lines where highway is not null highways.shp berlin-latest.osm.pbf Once I have QGIS with GDAL 1.10 I can myself do this kind of things by writing GDAL .vrt files which would take care of the SQL part but I guess many other users would appreciate to have a wizard. -Jukka Rahkonen- ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] QGIS 2.0.1 does not start on 32-bit Vista
Rahkonen Jukka jukka.rahkonen@... writes: Hi, Installed from http://download.osgeo.org/qgis/win32/QGIS-OSGeo4W-2.0.1-Setup-x86.exe Installation itself seems to be successful but when I launch the program after rebooting the computer the process stops and minidump is created. Splash screen is telling by then something about plugins. The minidump is available from http://latuviitta.org/downloads/qgis-20130924-001835-5128-5300-exported.dmp It dumps for me also on 32-bit XP but at a considerably later phase. The UI is created and QGIS shows the introductory hints before dying. I have been using QGIS 1.9 (QGIS-dev from OSGeo4W installer) successfully on both these computers. Any advice where I could try to find the reason for the failure? -Jukka Rahkonen- ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] QGIS 2.0.1 does not start on 32-bit Vista SOLVED
Jukka Rahkonen jukka.rahkonen@... writes: I removed all Python plugins and all dll plugins and copied them back one be one and I found that the beast is this one: delimitedtextplugin.dll date 2013-07-30 If is in the plugin directoty the result is always a crash but if I remove is then program starts. Does any of the developers read this list or should I make a ticket from this myself? -Jukka Rahkonen- ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] Rasterlite datasource gets always absolute path
Hi, If I save a project with Spatialite vectors and Rasterlite rasters by using the setting for relative paths, the Spatilite datasource will be like datasourcedbname='./vectors.sqlite' table=test (GEOMETRY) sql=/datasource However, the Rasterlite source gets saved as datasourceRASTERLITE:D:/data/raster.sqlite,table=rastertest/datasource This means that rasters are not found if my USB disk gets another drive letter. I made a little test and it seems that Rasterlite datasource can use relative paths in a similar way than Spatialite datasource and the following configuration works for me: datasourceRASTERLITE:./rasters.sqlite,table=rastertest/datasource Regards, -Jukka Rahkonen- ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Centre of the roads from polygons to lines
Matej Mailing mailing@... writes: Hi, I have a layer that contains roads in polygons and I need to get central lines of the polygons. When I convert directly from polygons to lines, I get two lines for each part of the road representing road boundaries which isn't good. What is the best way to achieve it? You may want to have a look at the OpenJUMP skeletonizer plugin, if not else then just getting some inspiration. http://sourceforge.net/projects/jump-pilot/files/OpenJUMP_plugins/More%20Plugins/JUMP%20Skeletonizer%20Plugin/ There seems to be an article about skeletonizing with PostGIS http://ageoguy.blogspot.fi/2010/12/squelettisation.html -Jukka Rahkonen- ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] Re: Qgis first startup is slow
haubourg regis.haubourg@... writes: Hi there, first launch for Qgis (1.7.4 and 1.7.1) in first Window session is very slow under windows 7 and windows server 2003 (Citrix XenApp 4.3 environnement). Next startups are then instantaneous.. I have had the same feeling with Windows XP so I took some timings. I have QGis 1.9.90 from OSGeo4W and computer is Windows XP SP3. Fist startup - 50 seconds before the Master splash screen shows - 60 seconds more and Checking provider plugins is ready - 40 second more and QGIS is started Total time was thus 2 minutes and 30 seconds. Next startups - total startup time between 5 and 15 seconds (10 repeats). -Jukka Rahkonen- ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] Re: Add delimited text layer doesn't import all records from CSV file
William Hudspeth bhudspeth@... writes: Hello, I am trying to import a CSV file with X and Y coordinates specified in two columns. Not all of the records are imported. Any ideas? Bill I would check first if some rows miss fields or have extra fields. The latter may happen if separating character is used in field values. You can also have a try with GDAL csv driver http://gdal.org/ogr/drv_csv.html -Jukka Rahkonen- ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] Re: Qgis nightly-build has problems with WMS 1.30
Barend Köbben kobben@... writes: For the record: The OGC WMS 1.3.0 spec says that: VERSION=version is OPTIONAL SERVICE=WMS is MANDATORY REQUEST=GetCapabilities is MANDATORY So the versions complaining about missing REQUEST parameter are actually correct (i.e. compliant). Many (most?) WMS clients are adding SERVICE and REQUEST automatically to the base URL because they are mandatory and QGIs should do the same. Version is optional by standard but myself I think it would be good to let users to select the version to use in explicit way with radio buttons or something. Without version the server will advertise the highest version that it supports and there can be troubles with the axis order if the version is 1.3. For the WMS users 1.1.1 is just as good as 1.3. -Jukka Rahkonen- ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] Re: QGIS + Inkscape
Brylie Oxley brylie@... writes: Hello, My name is Brylie Oxley. I am a student at Sierra College in Nevada City, CA. I would like to apply for the GSoC program. I have been studying GIS at Sierra College, where the courses focus on proprietary tools. For libre GIS tools to be viable options, we need high quality cartographic tools. This is where I see Inkscape as an EXCELLENT candidate. I would like to make an extension for QGIS and/or Inkscape that would enable us to send data from QGIS directly to Inkscape. It would also be nice to be able to have Inkscape leverage the QGIS API to import data/layers into a cartographic project. I am glad to get any feedback regarding users' experiences sharing data between these two programs. I would also like to know what some of the components are that I can leverage to create a bridging extension/improved cartographic interface for QGIS. Thank you for your time and consideration, Brylie Oxley There is heavy work going on with GDAL PDF driver http://gdal.org/frmt_pdf.html Mapserver can already make georeferenced PDF files like this with the trunk version of GDAL http://latuviitta.org/documents/Lahti_geospat.pdf Reading the geospatial info of that certain PDF needs TerraGo Toolbar which is an add-on to Adobe Acrobat reader. Here is another PDF output example http://latuviitta.org/documents/raitiovaunulinjat.pdf It is made with OpenJUMP derivative SkyJUMP and it demostrates using vector layers on to of a raster layer (tram lines in this case). User can toggle the layer visibility at least with Adobe Acrobat Reader. I am not sure if GDAL can do such layered output yet. However, I have a feeling that GDAL may soon be able to support direct conversion of raster files with OGR vector file overlays into layered and georeferenced PDF files. See recent PDF commits by Evan Rouault at http://trac.osgeo.org/gdal/timeline Perhaps that work will help you with the QGIS to Inkcape work flow. At least it might be good to study what could be done by feeding GDAL from QGIS before dublicating those functionalities into QGIS. -Jukka Rahkonen- ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] Rasterlite db with many raster tables
Hi, Is QGis supposed to find rasters from rasterlite database which contains several raster tables? I have managed to open all my test maps if I convert them to separate rasterlite files, but if I add more tables to the same DB QGis throws an error Couldn't get GDAL band or something like that. Could it be that QGis does not check the multi-raster table DB as described in http://gdal.org/frmt_rasterlite.html, that is, by doing something similar to gdalinfo RASTERLITE:multirasterdb.sqlite,table=raster1 I tried with GQis 1.9.0 from OS4Geo installation on Windows Vista (32-bit). -Jukka Rahkonen- ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] Re: Rasterlite db with many raster tables
Paolo Cavallini cavallini@... writes: Il 12/03/2012 17:43, Jukka Rahkonen ha scritto: Hi, Is QGis supposed to find rasters from rasterlite database which contains several raster tables? I have managed to open all my test maps if I convert them to it should, and it did some times ago. I made a two-table sample with GDAL 1.9.0 by using the following commands gdal_translate -of rasterlite -a_srs epsg:3067 tile_1f.tif rasterlite:multitable.sqlite,table=raster_1 gdal_translate -of rasterlite -a_srs epsg:3067 tile_1g.tif rasterlite:multitable.sqlite,table=raster_2 gdaladdo rasterlite:multitable.sqlite,table=raster_1 2 4 8 16 gdaladdo rasterlite:multitable.sqlite,table=raster_2 2 4 8 16 The result is here http://latuviitta.org/documents/multitable.sqlite (12 MB) Error I get from QGis: Cannot get GDAL raster band: -Jukka Rahkonen- -Jukka Rahkonen- ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] Re: Rasterlite db with many raster tables
Giovanni Manghi giovanni.manghi@... writes: Hi, The result is here http://latuviitta.org/documents/multitable.sqlite (12 MB) Error I get from QGis: Cannot get GDAL raster band: it works fine also for me, qgis master under Ubuntu 11.10 It seems to a problem with OSGeo4W. QGis 1.6.0 shows a dialogue for table selection and shows also images once the sqlite3.dll is updated. QGis 1.9.0. from OSGeo4W installer fails immediately after selecting the rasterlite DB. Does anybody have an idea about what to update this time? Sqlite3.dll is already up to date. -Jukka Rahkonen- ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] Re: Rasterlite layer is just a black box
ASAHI Kosuke asahi@... writes: Hi Jukka. My QGIS in WinXP work fine with rasterlite., but i need update sqlite3.dll. Please try download latest dll, and copy to OSGeo4w\bin. http://www.sqlite.org/download.html Thank you, that helped. I changed the original sqlite3.dll (372 kilobytes, 2008-02-06) with the one I had in GDAL directory created with the gisinternals installer (465 kB, 2010-10-24) and that was used for creating the rasterlite db. I will make OSGeo4W ticket is I have rights for that. Before the update I tried to create overviews with QGIs for another rasterlite test file. It failed and made the database unusable also for Spatialite-gui and Spatialite-gis. -Jukka Rahkonen- ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] Rasterlite layer is just a black box
Hi, Somebody had similar issue in January. QGis 1.9.0 opens rasterlite database fine but the image does not show. Spatialite-gis does show the map. Rasterlite database is created as: gdal_translate -of rasterlite herttoniemi.tif rasterlite:herttoniemi.sqlite,table=herttoniemi -co driver=jpeg gdaladdo -r nearest rasterlite:herttoniemi.sqlite,table=herttoniemi 2 4 8 16 32 64 128 File is available for testing from http://latuviitta.org/documents/herttoniemi.sqlite -Jukka Rahkonen- ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] Re: Rasterlite layer is just a black box
Paolo Cavallini cavallini@... writes: Il 08/03/2012 19:45, Giovanni Manghi ha scritto: On Thu, 2012-03-08 at 18:27 +, Jukka Rahkonen wrote: Hi, Somebody had similar issue in January. QGis 1.9.0 opens rasterlite database fine but the image does not show. Hi, here it shows just fine. I'm using qgis-master on Ubuntu 11.10 64 bit. Just tested loading it from the browser, it works well. Perhaps you can share a sample so we can test? All the best. You mean my test database? As I wrote, it is here http://latuviitta.org/documents/herttoniemi.sqlite I am on Windows Vista (32-bit), and QGis is from OSGeo4W. And the info tool reports pixel values (0,0,0) all over the image area. QGis version is QGIS version 1.9.90-Alpha QGIS code revision f61988e Compiled against Qt 4.7.1 Running against Qt 4.7.1 GDAL/OGR Version 1.8.1 GEOS Version 3.2.2 PostgreSQL Client Version 8.3.10 SpatiaLite Version 2.4.0 QWT Version 5.2.1 This copy of QGIS writes debugging output. -Jukka Rahkonen- ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] Re: PostGIS database creation wizzard
mick bareman@... writes: On Sun, 04 Mar 2012 05:53:25 +0100 cavallini@... cavallini@... wrote: http://wiki.openstreetmap.org/wiki/Osm2pgsql ? osm2pgsql relies on the user already know which keys to keep and which to dump, I can get partial success. I'm using it currently but I'm wanting to fine tune the procedure. The easiest alternative for my mind is to use osm2pgsql with the hstore option (-k). It will import all the keys and values into PostGIS. Then you can do the rest with SQL http://www.postgresql.org/docs/current/interactive/hstore.html Drawback is that you will get more data than necessary with the initial import. -Jukka Rahkonen- ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] Re: how to georeferenced an autocad .dxf file?
Nathan Woodrow madmanwoo@... writes: On Wed, Feb 29, 2012 at 8:00 PM, Andreas Neumann a.neumann at carto.net wrote: It would actually be very nice if the georeferencer tool in QGIS could also handle vector layers. I would assume that much of the code from the existing georeferencer could be re-used to also make vector georeferencing work. I think it is annoying that one cannot easily transform vector data usign a couple of match-points. +1 Would be a great feature. There seems to be qgsAffine plugin. The name suggests that it might do just that but I have not tried it myself. -Jukka Rahkonen- ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] Re: performance comparisons between qgis-mapserver and UMN mapserver?
G. Allegri giohappy@... writes: Has anybody had the occasion to do benchmarks, or informal performance comparisons, between Qgis Mapserver and UMN Mapserver? http://www.slideshare.net/gatewaygeomatics.com/wms-performance-shootout-2011 -Jukka Rahkonen- ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] Re: PyQgis MapServer Export with Mapserver 6.0.1
Francesc Cañas kikocanas@... writes: Hi, I've created a map file with the PyQgis Mapserver export pluggin but it doesn't work. They tell me it's cause the plugguin it's for older versions of mapserver. (I have the 6.0.1) What changes I have to do in the .map file to makes it work? Thanks! Hi, That mapfile has quite a lot to correct. Two things I noticed first is that nowadays OGC services do not work at all by default. They must be explicitly activated in the MAP level METADATA with something like ows_enable_request * which activates everything. Templates must also exist and they must start with a magic string. Read the Mapserver migration guide http://mapserver.org/trunk/MIGRATION_GUIDE.html The Mapserver export plugin seems to make so bad mapfiles for the current Mapserver version that it would perhaps be better to remove the plugin if nobody has time and interest for correcting it. I do not believe it has worked well since Mapserver 5.2. -Jukka Rahkonen- ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] Re: PyQgis MapServer Export with Mapserver 6.0.1
Francesc Cañas kikocanas@... writes: Hi, I've added the METADATA It seems that Template is used to format the map for it's visualitzation in web. But what I want is open this map with openlayers in an existing web... If I use an empty template with the magic line: !-- MapServer Template -- !DOCTYPE HTML PUBLIC -//W3C//DTD HTML 4.01 Transitional//EN http://www.w3.org/TR/html4/transitional.dtd; html head titleMapServer Template Sample/title /head body MapServer Template Samplebr /body /html The only thing displayed at screen is MapServer Template Sample And if I use the web where I want to display the map, all other layers WMS are displayed but the one that i maked appears like a broken image repeated for all the map. Please do not start testing with OpenLayers and templates. Begin with a normal WMS and use either some well behaving GIS client (QGis, OpenJUMP, Kosmo) or even better, a browser with hand written basic calls. They are not extraordinary hard to write and by writing the requests yourself you are the one controlling the situation and not your application. Basic GetMap is as follows http://server.com/cgi-bin/mapserv?map=d:/mymap.mapSERVICE=WMSVERSION=1.1.1REQUEST=GetMapLayers=my_layerBBOX=w,x,y,zFORMAT=image/pngWIDTH=500HEIGHT=500SRS=EPSG:4326STYLES= and here is a live example http://188.64.1.61/cgi-bin/ms_ows?REQUEST=GetMapSERVICE=WMSVERSION=1.1.1WIDTH=563HEIGHT=437LAYERS=osm_pisteetFORMAT=image/pngBBOX=-369151.98300283286,6597900.0,1511076.628895184,8057331.444759207SRS=EPSG:3067STYLES= Make your service work with the basic setting and only after you have seen it works continue to more challenging use. -Jukka Rahkonen- ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] Re: Resetting the extent of a shapefile
magerlin MAP@... writes: I have deleted large geographical parts of a shape file because I only needed a very little part of it. But using Zoom to layer extent still zoom to the extent of the original shape file. I have tried to re-save the file using save-as, specifying CRS etc. but no change. In Layer properties, Metadata I can read: /Extents: In layer spatial reference system units : xMin,yMin 622219.27,1154061.75 : xMax,yMax 643120.73,1204120.54/ Where are these data stored and how do I update it? Hi, From http://gdal.org/ogr/drv_shapefile.html Spatial extent Shapefiles store the layer spatial extent in the .SHP file. The layer spatial extent is automatically updated when inserting a new feature in a shapefile. However when updating an existing feature, if its previous shape was touching the bounding box of the layer extent but the updated shape does not touch the new extent, the computed extent will not be correct. It is then necessary to force a recomputation by invoking the SQL 'RECOMPUTE EXTENT ON tablename' via the datasource ExecuteSQL() method. The same applies for the deletion of a shape. Note: RECOMPUTE EXTENT ON is available in OGR = 1.9.0. Thus RECOMPUTE EXTENT ON should help, or then saving the modified data into new shapefile and renaming that back afterwards. -Jukka Rahkonen- ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] Re: KML from WFS
magerlin MAP@... writes: I would like to get some data from a WFS server. The data is delivered as KML as far as I can see. The server requires authentication but as far as I can see that works ok. I can connect to the server and I can select a layer but when I click the OK button to load the layer I get an error message: The layer http://vej06.vd.dk/pls/mastra/mastra_gis.gis_pkg.wfs?SERVICE=WFSVERSION=1.0.0REQUEST=GetFeatureTYPENAME=snitSRSNAME=EPSG:25832 is not a valid layer and can not be added to the map Anybody got a clue? Hi, WFS server should send data in GML2 format with that request. It is not forbidden to send KML but then client should send an additional OUTPUTFORMAT= parameter because standard mandates that GML2 is the default for WFS 1.0. QGis should handle output from WFS 1.0 well. It is impossible to say what isgoing wrong by this information but here are some suggestions about how to gather more information. - Send your request with a browser and save the result into a file through Show page source code option. Then you can try to open the file directly with QGis or study it with GDAL utility ogrinfo. Instead of browser you can use wget or curl. - Install for example Fiddler2 proxy between QGis and WFS server so you can see what really happens in the discussion. GDAL 1.9 supports WFS directly as source format and you can use ogr2ogr for converting data from WFS into other vector formats. -Jukka Rahkonen- ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] Re: WFS Transactions to GeoServer freeze QGIS
Rahkonen Jukka Jukka.Rahkonen@... writes: Gis Mage gismage at ... writes: Hi list! I would like to know if anyone has any luck editing wfs layers published with geoserver? Problems are probably caused by this https://jira.codehaus.org/browse/GEOS-4854 -Jukka Rahkonen- ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] Re: connecting to GPS
Bob and Deb bobdebm@... writes: I'm still not able to run qgis with my garmin 60Csx on the USB port. With the Qt-based GIS qlandkarte I'm able to use my GPS thanks to qlandkarte's Garmin GPS driver ( http://www.qlandkarte.org/index.php?option=com_contentview=articleid=15Itemid=17). Could this be used in QGIS? I have been using QGis and OpenJUMP with a gratis (not open source) GPSGate client http://gpsgate.com/ with Garmin eTrex Vista through USB port on Windows and it has been very reliable. -Jukka Rahkonen- ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] Re: ecw problems
Alister Hood alister.hood@... writes: Date: Mon, 05 Dec 2011 10:40:32 + From: Giovanni Manghi giovanni.manghi@... Subject: Re: [Qgis-developer] Re: [Qgis-user] Re: ecw problems To: pieri70 pietro.rossin@... Cc: qgis-user@... Message-ID: 1323081632.2277.19.camel at sibirica Content-Type: text/plain; charset=UTF-8 On Mon, 2011-12-05 at 01:15 -0800, pieri70 wrote: Hello Jürgen which kind of compressed raster do you use instead of ECW (if you use any..?? Personally I'd try JPEG2000 (using openjpeg). But you might need to build openjpeg and gdal yourself :( try GeoTIFF TILED=YES COMPRESS=JPEG QUALITY=75 and overviews. Do you use JPEG compression for maximum compatibility? I would have thought you'd get much better results with something else. JPEG-in-TIFF is by no means maximally compatible but it suits very well for GDAL based systems, especially Mapserver. The result is not a JPEG image, it is a TIFF image but the image data inside TIFF is compressed with JPEG algorithm. It is not uncommon that tiff drivers cannot open such images but GDAL has no problems. It is essential to use JPEG compression with tiling. JPEG must be decompressed totally but if tiff file is split into tiles GDAL can pick just a correct set of tiles to be decompressed. Jpeg compressed tiffs have about same file size as ECW and JPEG2000 with about the same visual quality but the artifacts are different. GDAL is handling jpeg-in-tiff images at least as fast as ECW images and much faster than JPEG2000 images even with the fastest JPEG2000 driver which is usually JP2KAK (Kakadu)or JP2ECW (ERDAS). They are not free. JP2MrSID a third non-free driver but I have not used it. OpenJPEG driver JP2OpenJPEG is much better than Jasper driver JPEG2000 at least with big images. For a desktop use I would guess that JPEG2000 with OpenJPEG driver is fast enough. For a busy WMS server it is not so good choice. I do not mean that JPEG2000 is slow by the nature. If used, for example, with native Kakadu tools it is flaming fast. The problem is that JPEG2000 is very complicated format and open source libraries are not yet as good as the best commercial ones. -Jukka Rahkonen- ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] Re: File-based Mastermap
Andreas Neumann a.neumann@... writes: Perhaps you could also look into SpatiaLite. It comes without the limitations of Shapefiles (column names, file sizes) and is fast and a database without installation (file based). Also you need to copy only one file instead of multiple ones. SpatiaLite is not yet supported by FME (will be supported from FME 2013 on I heard) - but you can use ogr2ogr for file translations. I believe the new DB-Manager Plugin from the last Google Summer of Code can also assist in converting data from Postgis to SpatiaLite, but I am not 100% sure. Andreas GDAL SQLite driver does not make the most valid Spatialite databases. Alessandro Furieri (man behind Spatialite)wrote: The current version of the spatialite's OGR driver has many severe issues. Shortly said, you cannot safely use OGR to create a SpatiaLite own DB, because this will simply produce a broken (invalid, inconsistent) DB. I've already developed a full patchset for OGR, and I hope to be able to release the code to the GDAL project ASAP While waiting for the patches there are two usable methods for making valid, consistent DB: 1. Import shapefiles directly with Spatialite tools or with Spatialite-gui. 2. Use ogr2ogr first with options ogr2ogr -f SQLite -dsco SPATIALITE=yes -lco SPATIAL_INDEX=no temp.sqlite source_data 3. Clean up the temporary spatialite database with Openlite utility by creating a new empty database and copying the tables from the temp.sqlite into it. Spatialite=yes option needs gdal 1.7.0 or higher http://www.gdal.org/ogr/drv_sqlite.html The troubles with Spatialite databases created by ogr2ogr are not very big. Some foreign key constraints and triggers are not OK which makes it harder to make properly working spatial views into database etc. For simple read-only access to the tables the databases created with ogr2ogr are OK. ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] Re: Trouble with classifying a Spatialite layer
Rahkonen Jukka Jukka.Rahkonen@... writes: I was trying to classify is the osm_line layer filtered with sql=highway NOT null. Classification method is Unique value with the old symbology and Categorized with the new symbology. Neither of them show me the attribute value list. I made some more trials. If I read the whole Spatialite table into QGIS the automatic classification works but if the layer is created by using SQL query filter then it does not. -Jukka Rahkonen- ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] Re: QGIS WMS GetMap request wtih SLD?
Anders Söderman anders.soder...@... writes: Hi folks. Are their any discussions or plans that QGIS will be able to send a WMS GetMap request, which also contains a link to an SLD? Hi, At the same time it would be good to add support for reading SLD_BODY from a local text file and send it with GetMaps, as well as additional vendor parameters which might be very useful espacially with Mapserver which can be configured to use variable substitution when selecting the data that is used for rendering WMS layers. This OpenJUMP feature request should give an idea about what I mean http://sourceforge.net/tracker/?func=detailaid=3005187group_id=118054atid=679909 -Jukka Rahkonen- ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] WMS through https and basic auth
Hi, Our WMS server is using http basic authentication and it can only be accessed through https. I triet to use it with QGIs 1.5.0 (from OSGeo4W) but it leads only to this error message: Could not understand the response. The wms provider said: Download of capabilities failed: Unknown protocol specified Next I tried the connection by installing InteProxy on my own computer. Then QGis is communicating fist with InteProxy that is acting like server at http://localhost. This way QGis can read the GetCapabilities from our WMS and I can even add a WMS layer on a map. However, I can see from the WMS logs that no requests are coming from QGis. I suppose this is because QGis in not sending GetMap to the Inteproxy address at localhost but to the URL advertised in GetCapabilities of our server. That is like https://our.wms_server.fi... This is naturally correct behaviour according to WMS standard, but in case of proxy it does not work. Questions: 1. Is QGis 1.5.0 supposed to support https communication on Windows? 2. When OpenJUMP makes connection to WMS service it is checking first if the base URLs for GetCapabilities and GetMap are the same. If they are not, it asks the user select which one to use, the same base URL as used for GetCapabilities or the one captured from the GetCapabilities document. This way it is possible to use for example InteProxy for taking care of https communication and authentication (even OpenJUMP can do it without proxy as well). This feature has been usuful for me even with WMS services which are advertising wrong GetMap URL because very often in these cases the GetCapabilities URL works also for GetMap. What do QGis developers think, would this be a useful feature to have also in QGis? -Jukka Rahkonen- ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
