[Qgis-user] GRASS Newbie: empty results layers
Hi, My first experiments with grass commands frustrate me. All tests I run end up with empty shp layers with 0 items. I managed to “selectAll-copy the log (but where is that log saved?) and this is the result. Any comment will be rewarded with a beer next time you pass in Brussels. Running QGis2.6.1 on OSX 10.10 Yosemite thanks in advance Joris here’s the log Algorithm v.distance - Finds the nearest element in vector map 'to' for elements in vector map 'from'. starting... g.proj -c proj4=+proj=lcc +lat_1=51.172333 +lat_2=49.839 +lat_0=90 +lon_0=4.3674866 +x_0=15.013 +y_0=5400088.438 +ellps=intl +towgs84=-106.869,52.2978,-103.724,0.3366,-0.457,1.8422,-1.2747 +units=m +no_defs v.in.ogr min_area=0.0001 snap=-1 dsn=/Volumes/data/Users/nikh/Desktop/voornik/layers layer=VWEALijstParkenDec2013 output=tmp1418734601363 --overwrite -o v.in.ogr min_area=0.0001 snap=-1 dsn=/Volumes/data/Users/nikh/Desktop/voornik/layers layer=AnkerplLamb72 output=tmp1418734601364 --overwrite -o g.region n=240475.402871 s=153205.121463 e=258860.969192 w=22089.4926875 res=1 v.distance from=tmp1418734601363 to=tmp1418734601364 upload=dist column=NAAM output=output217e40d03eca4799b41412537a6a4e11 --overwrite v.out.ogr -s -c -e -z input=output217e40d03eca4799b41412537a6a4e11 dsn=/Volumes/data/Users/nikh/Desktop/voornik format=ESRI_Shapefile olayer=test type=auto Cleaning up temporary files ... Starting GRASS ... Executing '/Volumes/data/Users/nikh/.qgis2//processing/grass_batch_job.sh' ... Welcome to GRASS 6.4.4 (2014) GRASS_INFO_MESSAGE(14043,1): 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 GRASS_INFO_END(14043,1) GRASS_INFO_MESSAGE(14043,2): Projection information updated GRASS_INFO_END(14043,2) GRASS_INFO_MESSAGE(14044,1): Over-riding projection check GRASS_INFO_END(14044,1) GRASS_INFO_MESSAGE(14044,2): Layer: VWEALijstParkenDec2013 GRASS_INFO_END(14044,2) GRASS_INFO_MESSAGE(14044,3): Counting polygons for 80 features... GRASS_INFO_END(14044,3) GRASS_INFO_MESSAGE(14044,4): Importing map 80 features... GRASS_INFO_END(14044,4) GRASS_INFO_MESSAGE(14044,5): - GRASS_INFO_END(14044,5) GRASS_INFO_MESSAGE(14044,6): Building topology for vector map ... GRASS_INFO_END(14044,6) GRASS_INFO_MESSAGE(14044,7): Registering primitives... GRASS_INFO_END(14044,7) GRASS_INFO_MESSAGE(14044,8): 80 primitives registered GRASS_INFO_END(14044,8) GRASS_INFO_MESSAGE(14044,9): 80 vertices registered GRASS_INFO_END(14044,9) GRASS_INFO_MESSAGE(14044,10): Number of nodes: 80 GRASS_INFO_END(14044,10) GRASS_INFO_MESSAGE(14044,11): Number of primitives: 80 GRASS_INFO_END(14044,11) GRASS_INFO_MESSAGE(14044,12): Number of points: 80 GRASS_INFO_END(14044,12) GRASS_INFO_MESSAGE(14044,13): Number of lines: 0 GRASS_INFO_END(14044,13) GRASS_INFO_MESSAGE(14044,14): Number of boundaries: 0 GRASS_INFO_END(14044,14) GRASS_INFO_MESSAGE(14044,15): Number of centroids: 0 GRASS_INFO_END(14044,15) GRASS_INFO_MESSAGE(14044,16): Number of areas: - GRASS_INFO_END(14044,16) GRASS_INFO_MESSAGE(14044,17): Number of isles: - GRASS_INFO_END(14044,17) GRASS_INFO_MESSAGE(14044,18): Building topology for vector map ... GRASS_INFO_END(14044,18) GRASS_INFO_MESSAGE(14044,19): Registering primitives... GRASS_INFO_END(14044,19) GRASS_INFO_MESSAGE(14044,20): 80 primitives registered GRASS_INFO_END(14044,20) GRASS_INFO_MESSAGE(14044,21): 80 vertices registered GRASS_INFO_END(14044,21) GRASS_INFO_MESSAGE(14044,22): Building areas... GRASS_INFO_END(14044,22) GRASS_INFO_MESSAGE(14044,23): 0 areas built GRASS_INFO_END(14044,23) GRASS_INFO_MESSAGE(14044,24): 0 isles built GRASS_INFO_END(14044,24) GRASS_INFO_MESSAGE(14044,25): Attaching islands... GRASS_INFO_END(14044,25) GRASS_INFO_MESSAGE(14044,26): Attaching centroids... GRASS_INFO_END(14044,26) GRASS_INFO_MESSAGE(14044,27): Number of nodes: 80 GRASS_INFO_END(14044,27) GRASS_INFO_MESSAGE(14044,28): Number of primitives: 80 GRASS_INFO_END(14044,28) GRASS_INFO_MESSAGE(14044,29): Number of points: 80 GRASS_INFO_END(14044,29) GRASS_INFO_MESSAGE(14044,30): Number of lines: 0 GRASS_INFO_END(14044,30) GRASS_INFO_MESSAGE(14044,31): Number of boundaries: 0 GRASS_INFO_END(14044,31) GRASS_INFO_MESSAGE(14044,32): Number of centroids: 0 GRASS_INFO_END(14044,32) GRASS_INFO_MESSAGE(14044,33): Number of areas: 0 GRASS_INFO_END(14044,33) GRASS_INFO_MESSAGE(14044,34): Number of isles: 0 GRASS_INFO_END(14044,34) GRASS_INFO_WARNING(14044,35): Input data contains 3D features. Created vector is 2D only, use -z flag to import 3D vector GRASS_INFO_END(14044,35) GRASS_INFO_MESSAGE(14046,1): Over-riding projection check GRASS_INFO_END(14046,1) GRASS_INFO_MESSAGE(14046,2): Layer: AnkerplLamb72 GRASS_INFO_END(14046,2) GRASS_INFO_MESSAGE(14046,3):
Re: [Qgis-user] GRASS Newbie: empty results layers
I am not GRASS guru but I will do anything for a beer in Brussels My experience with grass tells me you need to be careful about the GRASS region and I see this... GRASS_INFO_MESSAGE(14043,1): 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#160; GRASS_INFO_END(14043,1)#160; Not sure what it is but I would make sure the projections match. I also see this : GRASS_INFO_WARNING(14046,61): 2 areas represent more (overlapping) features, because polygons overlap in input layer(s). Such areas are linked to more than 1 row in attribute table. The number of features for those areas is stored as category in layer 2#160; And stuff like : GRASS_INFO_ERROR(14052,1): Unable to open vector map on level 2. Try to rebuild vector topology by v.build.#160; GRASS_INFO_END(14052,1)#160; Could this be all linked to projections and grass regions Not sure... I would also just try to run it directly in Grass... Making sure the region and projections are all the same.nbsp; Like I say... Anything for that beer!!! :) Nicolas Cadieux M.Sc. Le 2014-12-20 08:13, quot;Joris Hintjens [via OSGeo.org] quot; lt;ml-node+s1560n5178667...@n6.nabble.comgt; a écrit : Hi, My first experiments with grass commands frustrate me. All tests I run end up with empty shp layers with 0 items. I managed to “selectAll-copyquot; the log (but where is that log saved?) and this is the result. Any comment will be rewarded with a beer next time you pass in Brussels. Running QGis2.6.1 on OSX 10.10 Yosemite thanks in advance Joris here’s the log Algorithm v.distance - Finds the nearest element in vector map 'to' for elements in vector map 'from'. starting... g.proj -c proj4=quot;+proj=lcc +lat_1=51.172333 +lat_2=49.839 +lat_0=90 +lon_0=4.3674866 +x_0=15.013 +y_0=5400088.438 +ellps=intl +towgs84=-106.869,52.2978,-103.724,0.3366,-0.457,1.8422,-1.2747 +units=m +no_defsquot; v.in.ogr min_area=0.0001 snap=-1 dsn=quot;/Volumes/data/Users/nikh/Desktop/voornik/layersquot; layer=VWEALijstParkenDec2013 output=tmp1418734601363 --overwrite -o v.in.ogr min_area=0.0001 snap=-1 dsn=quot;/Volumes/data/Users/nikh/Desktop/voornik/layersquot; layer=AnkerplLamb72 output=tmp1418734601364 --overwrite -o g.region n=240475.402871 s=153205.121463 e=258860.969192 w=22089.4926875 res=1 v.distance from=tmp1418734601363 to=tmp1418734601364 upload=dist column=quot;NAAMquot; output=output217e40d03eca4799b41412537a6a4e11 --overwrite v.out.ogr -s -c -e -z input=output217e40d03eca4799b41412537a6a4e11 dsn=quot;/Volumes/data/Users/nikh/Desktop/voornikquot; format=ESRI_Shapefile olayer=test type=auto Cleaning up temporary files ... Starting GRASS ... Executing '/Volumes/data/Users/nikh/.qgis2//processing/grass_batch_job.sh' ... Welcome to GRASS 6.4.4 (2014) GRASS_INFO_MESSAGE(14043,1): 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 GRASS_INFO_END(14043,1) GRASS_INFO_MESSAGE(14043,2): Projection information updated GRASS_INFO_END(14043,2) GRASS_INFO_MESSAGE(14044,1): Over-riding projection check GRASS_INFO_END(14044,1) GRASS_INFO_MESSAGE(14044,2): Layer: VWEALijstParkenDec2013 GRASS_INFO_END(14044,2) GRASS_INFO_MESSAGE(14044,3): Counting polygons for 80 features... GRASS_INFO_END(14044,3) GRASS_INFO_MESSAGE(14044,4): Importing map 80 features... GRASS_INFO_END(14044,4) GRASS_INFO_MESSAGE(14044,5): - GRASS_INFO_END(14044,5) GRASS_INFO_MESSAGE(14044,6): Building topology for vector map ... GRASS_INFO_END(14044,6) GRASS_INFO_MESSAGE(14044,7): Registering primitives... GRASS_INFO_END(14044,7) GRASS_INFO_MESSAGE(14044,8): 80 primitives registered GRASS_INFO_END(14044,8) GRASS_INFO_MESSAGE(14044,9): 80 vertices registered GRASS_INFO_END(14044,9) GRASS_INFO_MESSAGE(14044,10): Number of nodes: 80 GRASS_INFO_END(14044,10) GRASS_INFO_MESSAGE(14044,11): Number of primitives: 80 GRASS_INFO_END(14044,11) GRASS_INFO_MESSAGE(14044,12): Number of points: 80 GRASS_INFO_END(14044,12) GRASS_INFO_MESSAGE(14044,13): Number of lines: 0 GRASS_INFO_END(14044,13) GRASS_INFO_MESSAGE(14044,14): Number of boundaries: 0 GRASS_INFO_END(14044,14) GRASS_INFO_MESSAGE(14044,15): Number of centroids: 0 GRASS_INFO_END(14044,15) GRASS_INFO_MESSAGE(14044,16): Number of areas: - GRASS_INFO_END(14044,16) GRASS_INFO_MESSAGE(14044,17): Number of isles: - GRASS_INFO_END(14044,17) GRASS_INFO_MESSAGE(14044,18): Building topology for vector map ... GRASS_INFO_END(14044,18) GRASS_INFO_MESSAGE(14044,19): Registering primitives... GRASS_INFO_END(14044,19) GRASS_INFO_MESSAGE(14044,20): 80 primitives registered GRASS_INFO_END(14044,20) GRASS_INFO_MESSAGE(14044,21): 80 vertices registered GRASS_INFO_END(14044,21) GRASS_INFO_MESSAGE(14044,22): Building
