[GRASS-dev] [GRASS GIS] #1733: r.out.kml fails close to UTM Zone boundary

GRASS GIS trac at osgeo.org
Mon Sep 17 12:14:50 PDT 2012


#1733: r.out.kml fails close to UTM Zone boundary
-----------------------+----------------------------------------------------
 Reporter:  voncasec   |       Owner:  grass-dev@…              
     Type:  defect     |      Status:  new                      
 Priority:  minor      |   Milestone:  6.4.3                    
Component:  Addons     |     Version:  6.4.2                    
 Keywords:  r.out.kml  |    Platform:  Linux                    
      Cpu:  x86-64     |  
-----------------------+----------------------------------------------------
 I have a raster layer on Vancouver Island, British Columbia approaching
 the boundary between UTM Zone 9/10.  When I try and export this layer to
 kml using the r.out.kml addon from a UTM Zone 9 WGS84 Grass Database, I
 get the following error message:

 Error: Convergence angle to great for undistorted output, reproject first.
 (2.273756 degrees).

 If I reproject the raster layer to UTM Zone 10, WGS84 and try the
 r.out.kml addon again, the kml file is successfully created.

 The problem here is that the layer is in fact fully encompassed within UTM
 Zone 9, it just happens to be close to Zone 10.

 I am not sure what the intended behaviour is when close to a UTM zone
 boundary, but if this message is correct, it would be nice to have an
 override option that ignores the convergence angle error and creates the
 kml regardless.

-- 
Ticket URL: <https://trac.osgeo.org/grass/ticket/1733>
GRASS GIS <http://grass.osgeo.org>



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