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1d
awarded  Explainer
2d
reviewed Approve suggested edit on Bounding box of a set of MULTILINESTRINGs PostGIS
2d
answered Bounding box of a set of MULTILINESTRINGs PostGIS
2d
comment Cutting out depth information in raster. Calculating volume in Qgis
regarding NO DATA. That is something that only you can tell. a Does a value of -10998 make sense to you? are the positive values in the sea or in land?
2d
comment Cutting out depth information in raster. Calculating volume in Qgis
If I'm correct, the r.volume will multiply each cell's value by it's size (area) to produce each cell volume, and them sum all the results. Using the expressions I propose this will re calculate the "useful" volume for your species.
2d
comment Cutting out depth information in raster. Calculating volume in Qgis
@anina, notice that map algebra is a cell by cell calculation. The cases I presented are for each one of your bathimetry raster cells. In the final expression each cell is tested for each case and a new value is set.
Sep
28
comment Cutting out depth information in raster. Calculating volume in Qgis
No. When I'm referring to cell depth, I mean the sea depth (how many meters below the sea level). Also make sure that the -10898 value does not represent NO DATA instead of a really big sea depth.
Sep
26
revised Cutting out depth information in raster. Calculating volume in Qgis
added 13 characters in body
Sep
26
answered Cutting out depth information in raster. Calculating volume in Qgis
Sep
24
comment QGIS 2.4.0: dissolve tool renders artifacts / errors
Check this answers gis.stackexchange.com/questions/71612/…
Sep
24
comment QGIS 2.4.0: dissolve tool renders artifacts / errors
I second WhiteboxDev opinion, this is related to the data itself. The reason why ArcGIS does not produce any errors is because it uses an internal tolerance to snap nearby vertices.
Sep
23
comment Why doesn't QGIS automatically find the new plugin update during startup?
Make sure you have changed the version also in metadata.txt and init.py files and init.
Sep
23
revised Collecting multipolygons into a single multipolygon with ST_Collect() in PostGIS
added syntax highliting
Sep
23
answered Collecting multipolygons into a single multipolygon with ST_Collect() in PostGIS
Sep
19
awarded  Popular Question
Sep
10
comment How to properly import QImage from PyQt4.QtGui?
See if this helps understand the "import" and "from x import y" docs.python.org/2/tutorial/modules.html
Sep
2
comment What's wrong with my expression to control label colors?
I'm glad it helped. please consider accepting the answer.
Sep
2
answered What's wrong with my expression to control label colors?
Aug
27
revised How to create a storm swath map?
Expanded my answer with step by step instructions
Aug
27
reviewed Approve suggested edit on Display Arabic text in ArcGIS