|
I can see two problems in the error output below: On 07/05/2016 12:38, Guillaume.Katarn
wrote:
------ Original Message ------
Subject: [Qgis-user] GRASS7 r.water.outlet returns error in QGIS 2.14.2 Date: Sat, 7 May 2016 02:38:08 -0700 (PDT) To: Qgis-user From: Guillaume Katarn Hello everyone, I am a new user of GIS software and I am currently facing an issue with the GRASS7 tool r.water.outlet. I precise that I am beginning with both Linux and GIS. I use Ubuntu 14.04 with QGIS 2.14.2 and GRASS7.0.3.I downloaded and installed the software by following the instructions of the official QGIS webpage: www.qgis.org/en/site/forusers/alldownloads.html I use GRASS7 r.watershed to create a "Drainage" raster that I use as an input for r.water.outlet. The second input is coordinate of vectorial points I want to delineate my basins (it could be even better if I could use several points to do so because I need 5 different basins). This is my r.water.outlet interface: <http://osgeo-org.1560.x6.nabble.com/file/n5265113/fen%C3%AAtre_remplie.png> First things I noticed: I can't enter decimal numbers, so I lose accuracy regarding to my points, and the interface is different from the one in the second image for the tool r.water.outlet regarding the inputs for my version of QGIS. <http://osgeo-org.1560.x6.nabble.com/file/n5265113/g.png> Then when I run the process (In my QGIS 2.14.2, the processing plugin version is 2.12.2), I obtain the log: [code]Démarrage de l'algorithme r.water.outlet - Watershed basin creation program. ... g.proj -c proj4="+proj=lcc +lat_1=44.1 +lat_0=44.1 +lon_0=2.337229166666667 +k_0=0.999877499 +x_0=600000 +y_0=3200000 +a=6378249.2 +b=6356514.999904194 +units=m +no_defs" r.external input="/home/kyle/Bureau/ERM/Data_ERM/GISProjectFolder/Rasters/Drainage_Direction_Watershed.tif" band=1 output=tmp1462467882073 --overwrite -o g.region -a n=1959000.0 s=1843500.0 e=1038600.0 w=923100.0 res=300 r.water.outlet input=tmp1462467882073 easting="989927" northing="1891138" output=output881924edb38d42189f35bcf5166a0da3 --overwrite g.region raster=output881924edb38d42189f35bcf5166a0da3 r.out.gdal -c createopt="TFW=YES,COMPRESS=LZW" input=output881924edb38d42189f35bcf5166a0da3 output="/home/kyle/Bureau/ERM/Data_ERM/GISProjectFolder/test_water_outlet.tif" Démarrage du SIG GRASS ... Exécution de '/home/kyle/.qgis2//processing/grass7_batch_job.sh' ... ATTENTION: Datum non reconnu par GRASS et aucuns paramètres trouvés Default region was updated to the new projection, but if you have multiple mapsets g.region -d should be run in each to update the region from the default Projection information updated ATTENTION: Datum non reconnu par GRASS et aucuns paramètres trouvés ATTENTION: Over-riding projection check Reading band 1 of 1... Here you are importing a raster "Drainage_Direction_Watershed.tif", but it seems that the tif file dows not have a proper coordinate system definition. New users often get tripped by this. In GRASS you should always use input data with the coordinate system correctly defined. r.external terminé. Link to raster map created. Description: Creates watershed basins from a drainage direction map. Keywords: raster, hydrology, watershed Usage: r.water.outlet input=name output=name coordinates=east,north [--overwrite] [--help] [--verbose] [--quiet] [--ui] Here's the real problem. In The new version of r.water.outlet you specify the input coordinates as: coordinates=<east>,<north> But above in the command created by the processing interface if has created the command with the old format: easting=<...> northing=<...> Maybe there is still some mixup between GRASS 6.4 and GRASS 7 in the Processing setup?? You will be able to easily overcome this if you switch to GRASS and enter the commands yourself. Additionally, I would point out that there's a nice set of GRASS addons: r.stream.* that offer extended capabilities for watershed analysis. For example the addon module r.stream.basins can take a point vector map as input drainage points. THen you get basins for all the drainage points in one go. Flags: --o Autoriser la sortie à écraser les fichiers existants --h Afficher le résumé d'utilisation --v Sortie du module en mode bavard --q Sortie du module en mode silence --ui Force launching GUI dialog Parameters: input Name of input drainage direction map output Name for output watershed basin map coordinates Coordinates of outlet point ERROR: r.water.outlet: Sorry, is not a valid parameter ERROR: r.water.outlet: Sorry, is not a valid parameter ERROR: Required parameter not set: (Coordinates of outlet point) ERREUR :Couche raster non trouvée ERREUR :Raster map or group not found Exécution de '/home/kyle/.qgis2//processing/grass7_batch_job.sh' terminée. Nettoyage des fichiers temporaires ... Converting outputs Charger les couches de résultat The following layers were not correctly generated. Basin You can check the log messages to find more information about the execution of the algorithm[/code] Does anyone have an idea of what could be the problem? If you need further information, do not hesitate to ask me. Thank you for your understanding, Guillaume -- View this message in context: http://osgeo-org.1560.x6.nabble.com/GRASS7-r-water-outlet-returns-error-in-QGIS-2-14-2-tp5265113.html Sent from the Quantum GIS - User mailing list archive at Nabble.com. _______________________________________________ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: http://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: http://lists.osgeo.org/mailman/listinfo/qgis-user This mail was received via Mail-SeCure System. Micha Silver Arava Drainage Authority +972-523-665918 |
_______________________________________________ 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
