[GRASS-dev] [GRASS GIS] #1674: r.cross problems when overlaying layers with no-data

[GRASS GIS]

#1674: r.cross problems when overlaying layers with no-data
------------------------------+---------------------------------------------
 Reporter:  pvanbosgeo        |       Owner:  grass-dev@…              
     Type:  defect            |      Status:  new                      
 Priority:  normal            |   Milestone:                           
Component:  Default           |     Version:  svn-trunk                
 Keywords:  r.cross, no data  |    Platform:  Linux                    
      Cpu:  x86-64            |  
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 When overlaying two layers that contain large areas of 'no data', r.cross
 seems to assign random values to raster cells with no-data, even when
 using the -z flag. See for example the output of r.what for a point where
 both input layers have no data but the raster cell get's assigned a value
 (30114 in the example below):

 r.what --v -f -n input=wdpaPNV at ConsStat
 coordinates=1549281.412639,-1312241.263941
 easting|northing|site_name|wdpaPNV at ConsStat|wdpaPNV at ConsStat_label
 1549281.412639|-1312241.263941||30114|no data; no data

 Probably because of this problem, r.cross cannot be run on large layers
 with large areas of no-data, it just get's stuck

 Paulo

 Running GRASS 7.0.svn (2012) on Ubuntu 12.04

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Ticket URL: <http://trac.osgeo.org/grass/ticket/1674>
GRASS GIS <http://grass.osgeo.org>