Hi Markus Netler, Using r.mapcalc with an if() condition might work but how can we give a condition without knowing anything about pixels(like.. where it is located and height.. etc). i am doing this for to assign height values to some pixels where i do not know the buildings location in a raster map graphically.
I think we are on the way to the solution. next step would be the solution. thanks, nani. On Sun, Apr 17, 2011 at 8:06 AM, Markus Neteler <[email protected]> wrote: > On Sat, Apr 16, 2011 at 10:36 PM, vinod kumar <[email protected]> > wrote: > > Hi Markus Neteler, > > > > yes, importing pixel values with r.in ascii and patch into existing into > > raster is simple easy for particular pixel, > > but if we want to assign a height value to more pixels, for example > > assigning height value to buildings in a > > particular area in raster map is difficult as we don't no to which pixel > > value we have to assign height value and > > checking each pixel value is difficult. > > Now I understand a bit more: so use r.mapcalc with an if() condition. > > Markus >
_______________________________________________ grass-user mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/grass-user
