4,737 reputation
39
bio website surfaces.co.il
location Israel
age
visits member for 2 years, 9 months
seen 16 hours ago

I work at the Arava Drainage Authority and Regional Council in southern Israel, doing hydrological analysis and general mapping. Involved with open source software since 1996, and FOSS GIS since 2006. I've also organized a few short GIS training seminars based on open source software.


Dec
4
comment Calculating area of an EPSG:4326 Polygon
The calculations of ST_Area (and other functions) will always be in the same units as the Coordinate System. The above refers to UTM, with units in meters, so the area will be sq meters.
Nov
13
comment QGIS vector edition corrupts SpatiaLite attribute table
I can verify the problem on 2.6 Win64. You must save right after splitting a feature. Only then can you continue editing.
Nov
13
revised changing mapset in cmd
added 3 characters in body
Nov
13
answered changing mapset in cmd
Oct
26
answered Meaning of r.viewshed output numbers in QGIS?
Oct
10
answered QGIS, interpolate along an irregular shape or line to create a DEM
Oct
7
answered Problem with Bash loop in GRASS GIS
Sep
30
answered Cutting out depth information in raster. Calculating volume in Qgis
Sep
26
answered How can I import tif file in GRASS GIS
Sep
25
awarded  postgis
Sep
24
answered How to interact with GRASS GIS vector map topology “level/layers” from terminal/command line?
Sep
24
comment Error importing raster into GRASS plugin in QGIS
I just now noticed that your original raster has no CRS information. I've added a different procedure to the answer above
Sep
24
revised Error importing raster into GRASS plugin in QGIS
added 1182 characters in body
Sep
24
comment Setting resolution for GRASS raster
I don't think anyone outside your project can tell you what resolution to choose. It highly depends on your goals. If the custom projection uses meters, then start by checking the east-west and north-south extents. And, as I said, choose a resolution which leaves a few thousand cells in each direction. And if you switch to a larger area, you might certainly decide to change to a larger resolution.
Sep
24
awarded  Autobiographer
Sep
22
answered Error importing raster into GRASS plugin in QGIS
Sep
22
answered Setting resolution for GRASS raster
Sep
17
comment My RapidEye image won't appear in GRASS GIS
Did you try setting a color ramp? What is the problem with the image above?
Sep
10
answered Is there a similar Esri “load data tool” on Postgres/PostGIS?
Sep
9
answered Raster map in different zone () than region ()