Re: [Qgis-user] split point cloud into X randomly selected (equally sized) parts
Olav, Take a look at libLas. http://www.liblas.org/ It does not necessarily have as many commandline tools, but it is performant and is licensed under BSD and LGPL. Here is a comparison between libLas and LASTools: http://www.liblas.org/lastools.html#lastools-liblas David. On Fri, Nov 23, 2012 at 6:49 PM, opeeters opeet...@gmail.com wrote: Great blog, Victor! Thank you! Well actually, a colleague came up with a very simple python script (see attachted splitgrid.py http://osgeo-org.1560.n6.nabble.com/file/n5018501/splitgrid.py ). This is no spatial randomisation like eg the v.kcv function in GRASS GIS, but for large enough datasets, it delivers wonderfully fast and with a good spatial spread. Feel free to add it to your blog if you see any added value. Thanks Andreas, for pointing me to the LAStools! I did not know about them yet and yes, even if we are not doing LiDAR, these tools are superb in crunching big amounts of numbers. I contacted Martin Isenburg concerning a license for using las2dem or blast2dem. His response left me a bit shell shocked. I don't know the guy well enough I guess. But still, everyone has bills to pay. We would have the funds to reward him handsomely for his efforts in the project we would like to use this application in. But I'm sorry, I really cannot endorse the way he is going commercial now. Thanks paulo25, for pointing my to the v.kcv function in GRASS GIS. I tried is through the SEXTANTE toolbox, but with 3 million points, I guess this algorithm gets clotted. I tried it on a machine with plenty of RAM and CPU. The process just dies after some time. But for larger data sets a spatial randomisation is not so important as for smaller ones... Thanks again to you three! Regards, Olav -- View this message in context: http://osgeo-org.1560.n6.nabble.com/split-point-cloud-into-X-randomly-selected-equally-sized-parts-tp5017330p5018501.html Sent from the Quantum GIS - User mailing list archive at Nabble.com. ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] QGISWebserver and PostGIS-Layer
Hello! So, finally, I resolved my problem - it was twofold: The main reason was a problem with the projection of the data, it was not properly projected (forgot to specify it for the import to postgis...) and secondly, I had to find the right bounding box... A spontaneous idea: would it be possible to write up a few lines on the python console to spit out the correct string, directly usable for the bounding box (cut 'n copy) taken from the current map extent...? (Up to now, my python experience is close to zero...) Thanks to Bernhard for his patience and his help! Albin Am 23.11.2012 09:40, schrieb Bernhard Ströbl: Hi Albin, be sure you reply to the list. It seems that QGIS desktop does not access the same server/same project/same layer as your request. Check the apache access.log and the GetMap request issued by QGIS desktop to find any differences. Bernhard Am 23.11.2012 09:32, schrieb Albin Blaschka: Hi! Am 23.11.2012 09:11, schrieb Bernhard Ströbl: Hi, do you get a map (and no white image) in QGIS desktop? If yes 1) your server is ok but your request is somehow wrong. 2) Check your access log and look at the GetMap-request that QGIS desktop sends. Compare it to your request. If no there is something misconfigured, e.g. the SRS of the layer does not match the SRS of the data, the database is not accessible from the server (check pg_hba.conf) Thank you for your patience! 1.) The map in QGIS Desktop is ok, no problems there! So, yes, the error lies somewhere with my request. 2.) I just checked the PostgreSQL-log (PostgreSQL is running on the same machine as Apache and is ok): There I found something strange and most probably the cause for the error: Each time, I make a request via the Mapserver, I get the error column 'geom' does not exist BUT in the respective table, the geometry column is called the_geom and registered with this name in the geometry_columns-table (I just chekced that, too). In the qgs-file (the project file), it is also the_geom - here the relevant part of the qgs-file: projectlayers layercount=1 maplayer minimumScale=0 maximumScale=1e+08 geometry=Point type=vector hasScaleBasedVisibilityFlag=0 idverortung20121123083448551/id datasourcedbname='mydatabase' host=myserver port=5432 user='myuser' password='pwd' sslmode=allow key='gid' srid=4326 type=POINT table=myschema.verortung (the_geom) sql=/datasource I am slightly puzzled about that, I just start looking into that issue... Mhmmm... Thanks, best regards, Albin Bernhard Am 23.11.2012 08:52, schrieb Albin Blaschka: Hi! Am 23.11.2012 08:02, schrieb Bernhard Ströbl: Hi Albin, try http://myserver/cgi-bin/qgis_mapserv.fcgi?SERVICE=WMSVERSION=1.1.1REQUEST=GetMapFORMAT=image/pngCRS=EPSG:4326WIDTH=500HEIGHT=500LAYERS=mypostgislayerBBOX=12.96,47.79,12.98,47.81 as a major change from 1.1.1 to 1.3.0 is the exchange of x and y coordinates or use VERSION=1.3.0 and exchange x and y coordinates of the BBOX if I understand you correctly you get an image as reply but the image is all white. So the server is running ok but there are no data in the place for which you request the map. Yes, you understand correctly - I followed your example, but no success... Is there a possibility to switch on some kind of logging, additionally to the apache logging? In the apache logs, no errors or warnings or similar appear... Thank you for your help! regards, Albin Am 22.11.2012 17:05, schrieb Albin Blaschka: Hello! Thank you for your answer! the URL seems to lack the BBOX parameter (I think this is a necessary parameter in a GetMap request) Can you access the maps through QGIS desktop? What happens if you send a GetCapabilities request: http://myserver/cgi-bin/qgis_mapserv.fcgi?SERVICE=WMSVERSION=1.3.0REQUEST=GetCapabilities In QGIS Desktop, everything seems ok, the GetCapabilities-Request looks also ok - here the head of the answer cut 'n copied: WMS_Capabilities version=1.3.0 xsi:schemaLocation=http://www.opengis.net/wms http://schemas.opengis.net/wms/1.3.0/capabilities_1_3_0.xsd;ServiceNameWMS/NameTitleQGIS-Server/TitleAbstract/OnlineResource xlink:type=simple xlink:href=/ContactInformationContactPersonPrimaryContactPersonAlbin Blaschka/ContactPersonContactOrganizationLFZ Raumberg-Gumpenstein/ContactOrganization/ContactPersonPrimaryContactVoiceTelephone/ContactElectronicMailAddressalbin.blasc...@raumberg-gumpenstein.at/ContactElectronicMailAddress/ContactInformation/Service ... Concerning the BBOX: I tried it with the following URL (for a small area close to the town of Salzburg), but again, no success, just a white canvas: http://myserver/cgi-bin/qgis_mapserv.fcgi?SERVICE=WMSVERSION=1.3.0REQUEST=GetMapFORMAT=image/pngCRS=EPSG:4326WIDTH=500HEIGHT=500LAYERS=mypostgislayerBBOX=12.96,47.79,12.98,47.81 Thanks, Albin Bernhard Am 22.11.2012 16:12, schrieb Albin Blaschka: Hello! I just started to use QGIS Server on an Ubuntu server, after installation and
Re: [Qgis-user] QGISWebserver and PostGIS-Layer
/qgis_mapserv.fcgi?SERVICE=WMSVERSION=1.3.0REQUEST=GetMapFORMAT=image/pngCRS=EPSG:4326WIDTH=500HEIGHT=500LAYERS=mypostgislayerBBOX=12.96,47.79,12.98,47.81 Thanks, Albin Bernhard Am 22.11.2012 16:12, schrieb Albin Blaschka: Hello! I just started to use QGIS Server on an Ubuntu server, after installation and basic configuration, I get a successful answer of a GetCapability-Request. Now, for my first real project, I have a question regarding the QGIS Server and PostGIS-Layers: If I enter the following URL in firefox, I just get a blank canvas, no layer: http://myserver/cgi-bin/qgis_mapserv.fcgi?SERVICE=WMSVERSION=1.3.0REQUEST=GetMapFORMAT=image/pngCRS=EPSG:4326WIDTH=500HEIGHT=500LAYERS=mypostgislayer What I have done so far: * I have set up a project in QGIS Desktop including a PostGIS-Layer, with the connection storing the full connection string (username and password), the layer is shown as it should be * I saved the QGIS project file and opend it in a text editor and found the credentials for the PostGIS-Layer * I copied the project file into the cgi-bin directory, chmod'ed it even to 777, just to get it going; trying it with the map=-parameter was also not successfull... * The database server is the same box as the apache (Ubuntu Oneiric 11.10, PostgreSQL 8.3.8, PostGIS Version 1.3; it is an intranet-server, not reachable from outside) What have I done wrong? Thanks in advance, best regards, Albin __ Information from ESET Mail Security, version of virus signature database 7720 (20121122) __ The message was checked by ESET Mail Security. http://www.eset.com ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user __ Information from ESET Mail Security, version of virus signature database 7722 (20121122) __ The message was checked by ESET Mail Security. http://www.eset.com ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user __ Information from ESET Mail Security, version of virus signature database 7732 (20121126) __ The message was checked by ESET Mail Security. http://www.eset.com ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] How to use Win32 nightly build?
Hi, I was trying to download the latest Win32 nightly build from http://download.osgeo.org/osgeo4w/release/qgis/qgis-dev/ but when I tried to run it there were several dlls missing. I'm not a developer so I would very much appreciate it if somebody could advise me (step by step) on how to get the latest nightly build without much effort. As I have problems with export of diagrams from Print Composer, I think that the latest nightly build could really help me (see the bug #4486 resolution at http://hub.qgis.org/issues/4486). Thanks, Eva ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] How to use Win32 nightly build?
Hi Eva, They are meant to be installed and upgraded through the OSGeo4W installer, which also takes care about the dependencies. See http://trac.osgeo.org/osgeo4w/ for download of the installer and additional information. The OSGeo4W installer allows you to update QGIS everyday with the latest master. Andreas Am 26.11.2012 21:17, schrieb Eva Tomanová: Hi, I was trying to download the latest Win32 nightly build from http://download.osgeo.org/osgeo4w/release/qgis/qgis-dev/ but when I tried to run it there were several dlls missing. I'm not a developer so I would very much appreciate it if somebody could advise me (step by step) on how to get the latest nightly build without much effort. As I have problems with export of diagrams from Print Composer, I think that the latest nightly build could really help me (see the bug #4486 resolution at http://hub.qgis.org/issues/4486). Thanks, Eva ___ 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] How to use Win32 nightly build?
2012/11/26 Eva Tomanová eva.toman...@centrum.cz Hi, I was trying to download the latest Win32 nightly build from http://download.osgeo.org/osgeo4w/release/qgis/qgis-dev/ but when I tried to run it there were several dlls missing. I'm not a developer so I would very much appreciate it if somebody could advise me (step by step) on how to get the latest nightly build without much effort. Download the installer and install the released version[1], then run the installer again to install qgis-dev[2]. Best regards Goyo [1] http://hub.qgis.org/wiki/quantum-gis/Download#12-OSGeo4W-Installer [2] http://hub.qgis.org/wiki/quantum-gis/Download#13-Master ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] Qgis crashes on File dialog
Hi, using Qgis on openSuse 12.2 and gnome 3, it crashes anytime it tries to open any file dialog (open/save). It seems to be version independent 1.8 as well as 1.9 alpha. I seem to recall there was similar problem about a year ago, but I can't quite remember or find the solution. Needles to say that it is rather annoying. perhaps somoene can help me ? Regards, Tom -- Tomas Vrana tomas.vr...@cemotel.cz - Ceskomoravska telekomunikacni s.r.o. http://www.cemotel.cz/ phone: +420 530 505 505 ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Qgis crashes on File dialog
Hi, 2012/11/26 Tomáš Vrána tomas.vr...@cemotel.cz Hi, using Qgis on openSuse 12.2 and gnome 3, it crashes anytime it tries to open any file dialog (open/save). It seems to be version independent 1.8 as well as 1.9 alpha. I seem to recall there was similar problem about a year ago, but I can't quite remember or find the solution. Needles to say that it is rather annoying. perhaps somoene can help me ? I had a similar issue some time ago after I have compiled QGIS with FileGDB support, it is due to different libxml version between FileGDB and the one on my machine. Have you compiled FileGDB support ? Could you provide any backtrace [1] about crash ? Regards, -SL [1] - http://hub.qgis.org/wiki/quantum-gis/Bugreports#Creating-a-backtrace Regards, Tom -- Tomas Vrana tomas.vr...@cemotel.cz --**--- Ceskomoravska telekomunikacni s.r.o. http://www.cemotel.cz/ phone: +420 530 505 505 __**_ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/**mailman/listinfo/qgis-userhttp://lists.osgeo.org/mailman/listinfo/qgis-user -- Salvatore Larosa linkedIn: http://linkedin.com/in/larosasalvatore twitter: @lrssvt skype: s.larosa IRC: lrssvt on freenode ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Qgis crashes on File dialog
I had a similar issue, but mine was because I had the wrong version of qt installed. One thing you could quickly check is the QGIS About window. It says what version of qt that QGIS was compiled against. Then use your distros package management software (apt?) to verify that the qt version you have installed matches the qgis compiled version. If the versions mismatch, you may have to install a matching version of qt. ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] How to use Win32 nightly build?
Am 26.11.2012 21:51, schrieb Goyo: Download the installer and install the released version[1], then run the installer again to install qgis-dev[2]. Using advanced installation, View:full you can install the qgis-dev Version along with all dependencies in one step. HTH, Andre Joost ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Qgis crashes on File dialog
Dne 26.11.2012 23:12, Donovan Cameron napsal(a): I had a similar issue, but mine was because I had the wrong version of qt installed. One thing you could quickly check is the QGIS About window. It says what version of qt that QGIS was compiled against. Then use your distros package management software (apt?) to verify that the qt version you have installed matches the qgis compiled version. If the versions mismatch, you may have to install a matching version of qt. They match, 4.8.1 in both cases. -- Tomas Vrana tomas.vr...@cemotel.cz - Ceskomoravska telekomunikacni s.r.o. http://www.cemotel.cz/ phone: +420 530 505 505 ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
