Re: [Qgis-user] qgis-server issue whit custom RS. Impossible to work with planetary data (sorry for possible cross-posting)
Hi Andrea Using custom CRS with QGIS server is not so common, so probably it is a bug in the server code. However I'm not sure what the correct way is to call a user CRS in a WMS request (need to have a look in the WMS spec). Regards, Marco On 25.11.2013 21:42, andrea pacifici wrote: Hi there, I'm trying to set-up a WMS server using the qgis-server (qgis 2.0 and Ubuntu 12.04) and data of planet Mars. Since Mars is not the Earth I must use custom RS. So, I have realized a qgis project with Martian data and I have properly filled fields in OWS server of Project Properties. Then I started a new Qgis project using the same custom RS and I try to add the layers using Add layer from a server command. Once Qgis is connected to the server the layers name are visible but layers don't appears. WMS Log Messages report: Map request error (Title:Service Exception; Error:Request contains a CRS not offered by the server for one or more of the Layers in the request. The WMS vendor also reported: Could not create output CRS; URL: http://localhost/cgi-bin/liz_test/qgis_mapserv.fcgi?SERVICE=WMSVERSION=1.3.0REQUEST=GetMapBBOX=-112389.97944659927452449,-163304.16266460958286189,99132.64792997627228033,-33665.77575473205070011CRS=USER:10WIDTH=574HEIGHT=352LAYERS=molaSTYLES=FORMAT=image/jpegDPI=96MAP_RESOLUTION=96FORMAT_OPTIONS=dpi:96) I copied my own CRS in the RS database of Qgis in /usr/share/qgis/resources/srs. db but I have still the same issue. Any idea? Thanks! Andrea ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user -- Dr. Marco Hugentobler Sourcepole - Linux Open Source Solutions Weberstrasse 5, CH-8004 Zürich, Switzerland marco.hugentob...@sourcepole.ch http://www.sourcepole.ch Technical Advisor QGIS Project Steering Committee ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] qgis-server issue whit custom RS. Impossible to work with planetary data (sorry for possible cross-posting)
I don't see where QGIS Server could differ from QGIS Desktop in retrieving the output CRS. It seems to use the same mechanism (through QgsCRSCache). Andrea, can you confirm it works properly inside QGIS Desktop? Would you share the user defined CRS and some extract of your data in that CRS? Giovanni 2013/11/26 Marco Hugentobler marco.hugentob...@sourcepole.ch Hi Andrea Using custom CRS with QGIS server is not so common, so probably it is a bug in the server code. However I'm not sure what the correct way is to call a user CRS in a WMS request (need to have a look in the WMS spec). Regards, Marco On 25.11.2013 21:42, andrea pacifici wrote: Hi there, I'm trying to set-up a WMS server using the qgis-server (qgis 2.0 and Ubuntu 12.04) and data of planet Mars. Since Mars is not the Earth I must use custom RS. So, I have realized a qgis project with Martian data and I have properly filled fields in OWS server of Project Properties. Then I started a new Qgis project using the same custom RS and I try to add the layers using Add layer from a server command. Once Qgis is connected to the server the layers name are visible but layers don't appears. WMS Log Messages report: Map request error (Title:Service Exception; Error:Request contains a CRS not offered by the server for one or more of the Layers in the request. The WMS vendor also reported: Could not create output CRS; URL: http://localhost/cgi-bin/liz_test/qgis_mapserv.fcgi?SERVICE=WMSVERSION=1.3.0REQUEST=GetMapBBOX=-112389.97944659927452449,-163304.16266460958286189,99132.64792997627228033,-33665.77575473205070011CRS=USER:10WIDTH=574HEIGHT=352LAYERS=molaSTYLES=FORMAT=image/jpegDPI=96MAP_RESOLUTION=96FORMAT_OPTIONS=dpi:96 ) I copied my own CRS in the RS database of Qgis in /usr/share/qgis/resources/srs. db but I have still the same issue. Any idea? Thanks! Andrea ___ Qgis-user mailing listQgis-user@lists.osgeo.orghttp://lists.osgeo.org/mailman/listinfo/qgis-user -- Dr. Marco Hugentobler Sourcepole - Linux Open Source Solutions Weberstrasse 5, CH-8004 Zürich, switzerlandmarco.hugentob...@sourcepole.ch http://www.sourcepole.ch Technical Advisor QGIS Project Steering Committee ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user -- Giovanni Allegri http://about.me/giovanniallegri blog: http://blog.spaziogis.it GEO+ geomatica in Italia http://bit.ly/GEOplus ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Merging multiple shapefiles - why doesn't it work?
On 11/25/2013 07:24 AM, BigBaka wrote: Hi, I have for a particular province in my country of question I have multiple separate folders for each segment of the province and I'm trying to get all the segments combined into one larger shapefile for each unit (eg rivers). I've been looking around forums to try and do this seemingly simple task, but cannot find a solution that seems to work.Trying to use the merge shapefiles in Vector- Data Management Tools doesn't seem to be a great option because it seems that you can only merge 2 files at a time, which is not particularly practical with 20 odd files. So I looked around and found a plugin called mmqgis which has a Merge Layers option which seems to offer a way to highlight certain layers in the TOC and spit out an output into a new shapefile. Everything seemed to work when I tried this but finally, I realised that not all the layers had been copied into the new shapefile. In fact it seems that only one or two layers will be combined at any one time. Lastly I followed a suggestion here http://osgeo-org.1560.x6.nabble.com/Merging-3-different-Shapefiles-tt4138254.html#a4138257 to copy and paste the attribute tables from each different shapefile into a new shapefile. This seemed to work until I saved the new shapefile, and all the values in the attribute table turned to NULL. I have exactly the same problem running Windows 7 (QGIS 1.8) and Ubuntu 12.04 (QGIS 2.0).Any suggestions welcome.ThanksBigBaka Depends on if you want to learn to script a loop. You can definitely use ogr2ogr on the command line with the append option. You'd need to write a short script to loop over all shp files in your directory adding them one at time. Or do something similar by importing all of the files into a spatialite or postgis database (both could also be scripted). Enjoy, Alex ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] strange results when calculating area and perimeter
Hello, I'm using the wounderful (:)) qgis Dufour 2.0.1 and I'm trying to calculate area and perimeter from a simple shapefile with CRS WGS84UTM32 following these steps: 1) set up the CRS of the project to WGS84UTM32 (on the fly transformation is checked) 2) load the shapefile 3) click on it with the identifier tool (identify features) I obtain: - area: 19.321 km² - perimeter: 0.221 m () 4) then I try to calculate in the table ... - area: 2,301,030,218 while in the preview was 19,320,205.394043 () - perimeter: 2,859,402,286 while in the preview was 20,391.7709396732 () then I modify the general CRS settings for new project (settings -- options) to WGS84UTM32 and, after reloading qgis, I did steps 1, 2 again and I obtained: 3bis) in the identify tool: - area: 19.321 km² - perimeter: 20.392 km 4bis) and in table: - area: 19,320,205.3 - perimeter: 20,391.771 The second way seems to give more consistent results. But why should I setup the general CRS option if I've already setup the project CRS? Shouldn't the geometry function all referred to the project settings? There is something of wrong in my first procedure? Thank you in advance rob ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] How to generate a topo map from an excel file
Hello all, I have an excel file that looks like a 2D array ( Lat and Long on the axis). I would like to convert this file to a topo map using QGIS. First, I would like to add that Excel sheet, but is too large so it will not go through the server e-mail-list. Second, I would appreciate any solutions to the merit of the problem. Suggestions? -- Eyal Saiet University of Alaska Fairbanks Fairbanks, AK 99775 (907) 750 6555 (cell) ejsa...@alaska.edu gregory.wal...@gi.alaska.edu ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] How to generate a topo map from an excel file
Hello Eyal, You need to convert your excel into a Comma Separate Values (CSV) file. You can do it in Excel itself using save as... After that, you can use the Layer Add Delimited Text Layer to add your file in the map as points. Best regards, Alexandre Neto On Tue, Nov 26, 2013 at 10:16 AM, Eyal Saiet ejsa...@alaska.edu wrote: Hello all, I have an excel file that looks like a 2D array ( Lat and Long on the axis). I would like to convert this file to a topo map using QGIS. First, I would like to add that Excel sheet, but is too large so it will not go through the server e-mail-list. Second, I would appreciate any solutions to the merit of the problem. Suggestions? -- Eyal Saiet University of Alaska Fairbanks Fairbanks, AK 99775 (907) 750 6555 (cell) ejsa...@alaska.edu gregory.wal...@gi.alaska.edu ___ Qgis-user mailing list Qgis-user@lists.osgeo.org 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
[Qgis-user] Custom color managing
Dear all: I've trying to speed up diagram creation. I have a bunch of layers with the same fields (rigth now it's difficult to have a single layer and filter it) where I want to display diagrams. I have to set each individual color in each layer. Maybe it would be nice to have a way of saving the diagram style, so it is loadable like layer style, but now i'm just thinking about have a set of colors easily accesible, like color picker *custom colors* The problem is that AFAIK I can't remove colors from inside *custom colors* nor define a new palette, so my current custom color palette is useless. Is there a method to accomplish this? Where are palettes stored (to try to remove/create manually)? Thanks in advance Jorge Tornero Instituto Español de Oceanografía Centro Oceanográfico de Cádiz www.ieo.es Cádiz, Spain Personal web http://imasdemase.com ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] strange results when calculating area and perimeter
I have made a long discussion on the matter in July 2012. http://lists.osgeo.org/pipermail/qgis-user/2012-July/018177.html So with the same Datum/Ellipsoid the area/perimeter/length values remain different with different tools/ways ( like Identify Features, Export/Add geometry columns, Measure tool, Field calculator), even for the same Projection (I have tried with EPSG:4326 and EPSG:32643. Regards ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] Field calculator issue
Hi list: (Maybe related with Rob Vech e-mail: strange results when calculating area and perimeter ) I'm was trying calculate area of a layer with two polygons, but I can't get right values. Layer and project are in UTM 17s (epsg 32717) projection. I want square kilometers, so the used expression is: $area/10 Field type is real, 10 digits, 2 decimals (also tryed with 15 digits) buth result is wrong for one polygon and zero for second. The layer has not geometric errors (I've check it), and can be download from https://sites.google.com/site/ccerdan/Home/Cuencas_Cajamarca.zip?attredirects=0d=1 There are a field Area_KM2 that was calculated in ArcGIS and it has the right values. The Area_Ha has the (wrong) result of QGIS field calculator. What is wrong with field calculator? UPDATE: After a reboot, field calculator found the right values... but What was wrong? Carlos ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] Layer Visibility and Atlas
Is there a way to restrict layer visibility when using the atlas capability of Print Composer? For example, let's say I have a points of interest layer, but I only want the POIs that fall *in* the current coverage layer feature to display, not the POIs in the neighboring areas (i.e., at the edges of the map). Best, --Lee -- Lee Hachadoorian Assistant Professor in Geography, Dartmouth College http://geospatial.commons.gc.cuny.edu http://freecity.commons.gc.cuny.edu ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] including images in (database) attributes
Hi all We also implemented Image dynamic link in Lizmap Web Client. You need to store the image file in a media folder relative the the project, fill an attribute of the layer with relative path to the image files (e.ggmedia/pictures/photo1.jpg ) . In the web client the image is displayed in the information popup (getFeatureInfo). If the file is not a photo, Lizmap popup shows a link to the file (pdf, zip, etc.). Example here : http://demo.lizmap.3liz.com/index.php/view/map/?repository=montpellierproject=montpellierzoom=1lat=5405666.66058lon=431227.17957layers=B0FTFFFTFTT You can click on one district polygon to show the popup. The attribute illustration contains the relative path to the image (with a link to open it in a new tab). The photo widget in QGIS forms is the right way to go. We must make the stored path relative to the project though, to help people move or publish the project and data easily. Michael 2013/11/25 Brent Wood pcr...@pcreso.com Cheers Niklaas, The website is developed using the Silverstripe CMS, rai...@silverstripe.com is the guy behind the web mapping stuff. The images are retrieved using a custom web service, from a local image database (now with several 100,000 images). Commercial application called Atlas (www.atlamd.com). We funded the development of a map search for images in Atlas, which we are looking to update at present. See the map search tool at https://atlas.niwa.co.nz/public.jsp Enable Assets - images (right of map) update the map (button top right of map) (don't zoom right now - the back end web map server is broken) Choose the left hand Marquee selection tool (box) draw a box around some area with images on the map the images in that box will be displayed... (note that I've just added about 16,000 echogram images - they are being processed, with thumbnails, etc being generated in a low priority background job - so you'll see lots of entries with no thumbnails until that completes) This also seems to be very similar to the sort of facility you are looking at implementing - images associated with features (or locations) on a map which can be previewed downloaded. I'm considering developing a QGIS plugin to provide similar access from a map based desktop - part of this initiative: http://www.niwa.co.nz/software/quantum-map Brent -- *From:* Niklaas Baudet von Gersdorff nikl...@kulturflatrate.net *To:* qgis-user@lists.osgeo.org qgis-user@lists.osgeo.org *Sent:* Tuesday, November 26, 2013 10:10 AM *Subject:* Re: [Qgis-user] including images in (database) attributes Hi Brent, Brent Wood [2013-11-25 12:38 -0800] : Not quite sure how this fits your needs, but the QGIS actions facility was implemented originally to do just this on the desktop - and it works well. OK, great I'll have a look at it! Also, we did not use QGIS for this, but built an (Open Source) web facility to do this, with a set of images at each location: [1]http://www.os2020.org.nz/project-map/ Click a green triangle (DTIS location) to drill down to the images at each site... This looks great! I could at least digg in the code and get some ideas. May give you some ideas if nothing else Definitely! Thank you, Niklaas -- Niklaas Baudet von Gersdorff nikl...@kulturflatrate.net http://www.kulturflatrate.net/niklaas ___ Qgis-user mailing list Qgis-user@lists.osgeo.org 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 ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] What is the best way to do a simple watershed analysis on a raster grid?
Hi I already tried the saga and grass tools via Processing framework. They are really powerfull, but also really complicated in my opinion. Hard to find the correct algo, the correct treshold, necessity to manually vectorize the produced watershed raster (I have surely missed something here...), etc. I am surely not an hydrology expert, but I am convinced that we could create a full processing model wich let humble users do the job. Any pointers to documentation or examples would be apreciated if anyone know some (I searched grass catchment basin or other keywords and could not find a step by step procedure adapted to beginners) Michael 2013/11/25 Alexander Bruy alexander.b...@gmail.com Hi Rob, you can try to do this with Processing framework. There is at least three different providers that have watershed analysis tools: GRASS, SAGA and TauDEM 2013/11/24 Rob Stewart rstew...@hydrologyandwater.com.au: Hi, What's the best way to do a simple watershed analysis on a raster grid? I'm wanting to generate rainfall/runoff sub-catchment polygons. Rob ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user -- Alexander Bruy ___ Qgis-user mailing list Qgis-user@lists.osgeo.org 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
[Qgis-user] Corrupted Files
I am running QGIS 1.8 and 2.0 on Parallels on a Mac. I am starting to have a problem when I go to open previous projects. The error says: Project file read error: error occurred while parsing element at line 1891 column 27 for file C:/Documents It does not happen all the time, and luckily, I have good back-up of most files, so I can go back to a previously stored version. However, I lose a lot of work when I have to do this. has anyone encountered this? Any suggestions? Pete Cimbolic cimbo...@aclu-md.org ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Distinct Colors for American Map
On 11/16/2013 03:43 PM, Dan Dittmann wrote: On Nov 15, 2013, at 7:09 PM, Sasa Sullivan wrote: I am learning QGIS and know the general instructions on how to color code areas through the Style feature but am not able to get a distinct color per state for a map of the USA, maybe it is my source as I don't see one listed that encompasses the state shape only. Also I only need the state, city and county boundaries, if someone has a scaled down Open Source shape files for the USA it would be helpful as I don't have unlimited hard drive space for the ones I have found Sasa ___ Hello Sasa, Without knowing where your data was obtained, I cannot speculate on the trouble encountered. The instructions below assume QGIS 2.01 is used and should be usable with adjustments on older versions as well. First lets get some data. The National Atlas website has numerous shape files available for download. Most of what you are looking for should be available fromhttp://nationalatlas.gov/atlasftp.html?openChapters=%2Cchpbound#chpbound. In this demo, I will be using the State Boundaries, One Million-Scale layer available for download at http://dds.cr.usgs.gov/pub/data/nationalatlas/statep010_nt00798.tar.gz. - Extract the archive and import the file statep010.shp into QGIS. - Open the Properties dialog for the imported layer. - Click Style from the column on the left. - Locate the menu Single Symbol and change that to Categorized. - Change the Column menu to State Click the Classify button. - Click OK. You now have a basic US Map with each state colored with a unique color. Dan Sasa, The Census provides generalized shapes at http://www.census.gov/geo/maps-data/data/tiger-cart-boundary.html, in addition to the high-precision TIGER/Line files. I would also look at Natural Earth which is a dataset designed for cartography at different scales. Their Admin 1 - States Provinces dataset will include the US and other countries' subnational units. Their data also includes various mapcolorX columns so that you can use a categorical theme as described by Dan to style your map with X colors, with no states touching another state styled with the same color. Best, --Lee ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] In lieu of a QGIS 2.0 Homebrew formula ...
Here's a link to a Gist i wrote today to build QGIS 2 from source against Homebrew-only packages. https://plus.google.com/+nicerobot/posts/cvAUMoSVVWN ref: https://gist.github.com/nicerobot/7664605 ref: http://lists.osgeo.org/pipermail/qgis-user/2013-September/024129.html Hope you find it useful ... and working :) ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] In lieu of a QGIS 2.0 Homebrew formula ...
Hi Robert, Nice work on that! Concerning the Homebrew QGIS formula, I have been working on a major update. I've added several new formula as well, to achieve a *complete and stable* working environ for the user, as well as PyQGIS and QGIS developers. Notably, there is now support for: * QGIS Server * Globe plugin (with latest osgEarth 2.5) * Many of the Processing extras (R, OrfeoToolbox, Saga) * Spatialite access in DB Manager * Required Python modules * Local API doc generation * Debug output builds for master branch (HEAD) * Current PostgreSQL access client * GPSBabel, for GPS Tools plugin * Separate Lwgeom library/formula for third-party Processing plugin From scratch, the entire formula, with all options, will take several hours or more to compile on a fast Mac. The build can be in the normal Homebrew prefix of `/usr/local` as well as custom prefixes. Currently the work is in a 'tap' here [0]. Some of the new formula have been accepted as pull requests, while others are in pull request limbo. Until many of the base formulae are committed (maybe) upstream, any formula in my tap will do the trick. There are duplicates of `gdal` and `grass` that will be *ignored* when updating the tap. I'm currently keeping them in sync with the main Homebrew tap while we work out the 10.9 upgrade bugs. You can manually use them if you are familiar with editing formulae and managing your local Homebrew git repository on the main tap. The QGIS 2.0 formula [1] is in a 'beta' state, and requires a good understanding of Homebrew to tinker with right now. It is about 85% complete, though does currently compile fine on OS X 10.7-8, while 10.9 is a work-in-progress and 10.6 is completely untested. Any help or testing, or pull requests to my tap's repo, would be gladly appreciated. Thanks to John Tull for his help on this and for his many pull requests to the upstream Homebrew project. Feel free to contact me for help if you embark on using the formula in the tap. [0] https://github.com/dakcarto/homebrew-osgeo4mac [1] https://github.com/dakcarto/homebrew-osgeo4mac/blob/master/Formula/qgis-20.rb Regards, Larry Shaffer Dakota Cartography Black Hills, South Dakota On Tue, Nov 26, 2013 at 8:08 PM, Robert Nix rob...@urban4m.com wrote: Here's a link to a Gist i wrote today to build QGIS 2 from source against Homebrew-only packages. https://plus.google.com/+nicerobot/posts/cvAUMoSVVWN ref: https://gist.github.com/nicerobot/7664605 ref: http://lists.osgeo.org/pipermail/qgis-user/2013-September/024129.html Hope you find it useful ... and working :) ___ Qgis-user mailing list Qgis-user@lists.osgeo.org 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
[Qgis-user] Field comparision
Hi list, I'm developing a Python plugin for QGIS and one of the features of this plugin is that the user can choose to create a new layer to store the points generated by the plugin or store them in a existing point layer. Every point has an associated information (attributes or fields), and in the case of new layer creation, it's easy to create the new layer with those attributes (say, for instance, name, number and temperature). But in the case of using a existing layer to store the points, I want first to check if the destination layer already has those fields; in that case i'll use them directly but if the fields doesn't exist in the layer, I'll give the user the chance to add it to the layer. This is pretty simple, too. But my approach to check for existing fields, consists in creating some QgsFields with the desired specs and check for equality against the layer fields. The problem is that the operator == of the class QgsField doesn't work properly, because it looks like when the fields are not of the string type, the comparision is bad. Seems that default construction of QgsFields of the type integer or double is different than the default construction of these fields when creating a layer with: QgsVectorLayer( Point?field=id:integerfield=survey:string(20)field=station:string(5)field=stnnum:integerfield=stnlat:doublefield=stnlon:doublefield=stnobs:string(255)index=yes, newLayer, memory) In the latter case, the field stnnum has: name=stnnum type=2 typeName=integer length=10 precision=0 while if you create the ssame field with: stnnumField=QgsField(name='stnnum',type=2,typeName='integer') name=stnnum type=2 typeName=integer length=0 precision=0 And that's why == doesn't work as expected (for me, of course) So maybe this approach is not very good. Any ideas to override this behaviour or just check for existing fields? Best regards, Jorge Tornero ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
