Re: [GRASS-user] Rasterize polygons, multiple polygons per grid cell

[Micha Silver]

Hi Lars On 09/30/2012 12:32 AM, Lars Dalby wrote: Micha Silver wrote Can you copy/paste your exact command? I think there should not be any space between 'coor' and '='. Sure, but as I run them from R, they look a bit different that when run from command line GRASS. execGRASS('v.mkgrid', parameters = list(map = 'VectorGrid', position = 'coor', coor = '-6358820,-17367529', grid = '142,360', box = '96486.28169014, 96486.28055556')) What happens here is that the list() command will make a list with 5 slots in this case. It looks like this: $map [1] "VectorGrid" $position [1] "coor" $coor [1] "-6358820,-17367529" $grid [1] "142,360" $box [1] "96486.28169014, 96486.28055556" So it will not make any difference to what is being send to GRASS if I have blank spaces between '=' and the values. R ignores these when making the list. I am afraid that the problem doesn't lie here. Do you think it could be related to the GRASS version I am running? (I am using 7.0) It seems that the GRASS parser doesn't "understand" the comma separated list of values. Here's a bug report of the problem: http://trac.osgeo.org/grass/ticket/739 I tried the suggestion in that link, but it still doesn't work: > pcoor<-paste(as.integer(1), as.integer(2), sep=",") > pbox<-paste(as.integer(2), as.integer(2), sep=",") > pgrid<-paste(as.integer(2), as.integer(2), sep=",") > pars<-list(map="testgrid", grid=pgrid, coor=pcoor, box=pbox) > pars $map [1] "testgrid" $grid [1] "2,2" $coor [1] "1,2" $box [1] "2,2" But then I still get: > doGRASS("v.mkgrid",flags="overwrite", parameters=pars) Error in doGRASS("v.mkgrid", flags = "overwrite", parameters = pars) :   Parameter <grid> does not have integer value Can I suggest you take this issue to the r-spatial list? Regards, Micha -Lars -- View this message in context: http://osgeo-org.1560.n6.nabble.com/Rasterize-polygons-multiple-polygons-per-grid-cell-tp5005264p5005361.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 This mail was received via Mail-SeCure System.

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