[GRASS-user] ESRI - Grass Equivalents
Hi I'm trying to replicate some of the functionality in ESRI via GRASS. I need to do a regularized spline with the following parameters: weight = 0.1 points = 12 cell size = 100 So far I'm trying to use the v.sruf.rst to accomplish this. I'm not sure how to match these values up with GRASS at all. Is the tension param similar to weight? Grass uses segments and ESRI uses cells? How do I match up GRASS's vars with esri's? max/min number of points in a segment min distance between points max distance between points on isoline conversion factor -- View this message in context: http://osgeo-org.1803224.n2.nabble.com/ESRI-Grass-Equivalents-tp6049458p6049458.html Sent from the Grass - Users mailing list archive at Nabble.com. ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
[GRASS-user] r.mapcalculator / r.mapcalc not producing raster
Hi all, I'm trying to combine two raster using the r.mapcalc/r.mapcalculator but am getting no where. I'm using python. # I did this previously... so dem and rain exist as rasters grass.run_command(r.in.gdal,input=location/dem.tif,output=dem) grass.run_command(r.in.gdal,input=location/rain.tif,output=rain) # Then I try this... grass.run_command(r.mapcalculator,amap=dem,bmap=rain,formula=A * B,outfile=test_combo) The output from that gives me... r.mapcalc test_combo = ( dem * rain ) 100% Done. When I try to add test_combo to the display in GRASS, nothing shows, even when I try to zoom to the layer in GRASS. r.info gives me the following: ++ | Layer:test_combo2Date: Fri Feb 18 13:19:52 2011 | | Mapset: PERMANENT Login of Creator: jay | | Location: newLocation | | DataBase: . | | Title: ( test_combo ) | | Timestamp: none | || | | | Type of Map: raster Number of Categories: 255 | | Data Type:FCELL | | Rows: 20 | | Columns: 20 | | Total Cells: 400 | |Projection: Lambert Conformal Conic | |N: 707999.97864227S: 628766.19610209 Res: 3961.68912701 | |E: 827306.35554785W: 607862.24148022 Res: 10972.20570338 | | Range of data:min = 0.00 max = 4241302.00 | | | | Data Description: | |generated by r.mapcalc | | | | Comments: | |dem * rain | | | ++ -- View this message in context: http://osgeo-org.1803224.n2.nabble.com/r-mapcalculator-r-mapcalc-not-producing-raster-tp6041018p6041018.html Sent from the Grass - Users mailing list archive at Nabble.com. ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
[GRASS-user] Re: r.mapcalculator / r.mapcalc not producing raster
That's not right @ all... How would I set the region? -- View this message in context: http://osgeo-org.1803224.n2.nabble.com/r-mapcalculator-r-mapcalc-not-producing-raster-tp6041018p6041165.html Sent from the Grass - Users mailing list archive at Nabble.com. ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
[GRASS-user] Re: r.mapcalculator / r.mapcalc not producing raster
Thanks, that did the trick. Setting g.region. Question, does that function set the region globally for Grass? For instance, if I'm using grass in another python console will that region be affected if I set the region in another instance of a python session? -- View this message in context: http://osgeo-org.1803224.n2.nabble.com/r-mapcalculator-r-mapcalc-not-producing-raster-tp6041018p6041309.html Sent from the Grass - Users mailing list archive at Nabble.com. ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
