[GRASS-dev] [GRASS GIS] #2368: Python version of r.grow does not support shrinking

[GRASS GIS]

#2368: Python version of r.grow does not support shrinking
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  Reporter:  wenzeslaus  |      Owner:  grass-dev@…
      Type:              |     Status:  new
  enhancement            |
  Priority:  minor       |  Milestone:  7.2.0
 Component:  Raster      |    Version:  svn-trunk
Resolution:              |   Keywords:  r.grow, r.grow.distance, r.buffer,
       CPU:              |  r.buffer.lowmem
  Unspecified            |   Platform:  Unspecified
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Comment (by neteler):

 Replying to [comment:7 neteler]:
 > Replying to [comment:6 mmetz]:
 > > Replying to [comment:3 glynn]:
 > > > The easiest change would be to have an "invert" flag which caused
 the distance= map to contain the distance from the nearest null cell
 (currently, it's the distance from the nearest non-null cell, so the non-
 null cells themselves have a distance of 0).
 > >
 > > Attached is a minimally invasive patch to add a new flag to
 r.grow.distance, calculating the distance to the nearest null cell.
 >
 > Patch applied to trunk in r67620.

 Can I backport this to 7.2.0? Again I need a negative buffer...

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Ticket URL: <https://trac.osgeo.org/grass/ticket/2368#comment:9>
GRASS GIS <https://grass.osgeo.org>