[GRASS-dev] [GRASS GIS] #390: r.viewshed precision bug

GRASS GIS trac at osgeo.org
Sun Aug 19 15:32:49 PDT 2012

#390: r.viewshed precision bug
 Reporter:  neteler     |       Owner:  grass-dev@…              
     Type:  defect      |      Status:  new                      
 Priority:  major       |   Milestone:  6.4.4                    
Component:  Raster      |     Version:  svn-develbranch6         
 Keywords:  r.viewshed  |    Platform:  All                      
      Cpu:  All         |  
Changes (by neteler):

  * milestone:  6.4.2 => 6.4.4


 Replying to [comment:10 hamish]:
 > Replying to [comment:7 hamish]:
 > > > 180deg is just @ viewing cell, so for good colors we also need:
 > > > (PITA, so maybe we could build that into the module)
 > Replying to [comment:9 mmetz]:
 > > Same as r.los, the viewing cell is defined to be straight below the
 > > viewpoint = 180 deg.
 > what my poor wording was trying to suggest: we make the module set color
 rules based on what's left of the overall range after 180 and -1 are taken
 out, much the same as r.slope.aspect or v.surf.rst will set color rules
 for their output maps. Not that we change the data value of 180 at the
 viewpoint, just to add a special color rule for that.

 Any suggestions to get this one closed? "Just" a special color table is

Ticket URL: <http://trac.osgeo.org/grass/ticket/390#comment:11>
GRASS GIS <http://grass.osgeo.org>

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