[GRASS-dev] [GRASS GIS] #1070: cannot enter useful values to r.param.scale curvature tolerance in wxPython GUI

[GRASS GIS]

#1070: cannot enter useful values to r.param.scale curvature tolerance in wxPython
GUI
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 Reporter:  cmbarton       |       Owner:  grass-dev at lists.osgeo.org
     Type:  defect         |      Status:  new                      
 Priority:  normal         |   Milestone:  6.4.0                    
Component:  wxGUI          |     Version:  unspecified              
 Keywords:  r.param.scale  |    Platform:  All                      
      Cpu:  All            |  
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 The s_tol (slope tolerance) and c_tol (curvature tolerance) arguments are
 not well documented for r.param.scale, but turn out to be of great
 importance in achieving useful results of terrain classification. s_tol
 values are in degrees but c_tol is in unitless curvature values. Useful
 values range between 0.0000 and 0.0006 according to the documentation.

 For some reason, the GUI only allows values to 3 decimal places (0.000) in
 the s_tol and c_tol fields. This means that it is impossible to enter any
 values between 0.0000 and 0.0010 even though these are exactly the values
 that need to be entered. Of course you can enter these from the command
 line, but this bug cripples use of this module for many users.

 I don't know where the decimal place is specified in the code--in the
 interface description in the C code, or somewhere in the wxPython
 interface parser code.

 Michael

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Ticket URL: <http://trac.osgeo.org/grass/ticket/1070>
GRASS GIS <http://grass.osgeo.org>