[GRASS-dev] [GRASS GIS] #2298: r.stream.order hack= generates order 1 single pixels

[GRASS GIS]

#2298: r.stream.order hack= generates order 1 single pixels
----------------------------+-----------------------------------------------
 Reporter:  hcho            |       Owner:  grass-dev@…              
     Type:  defect          |      Status:  new                      
 Priority:  major           |   Milestone:  7.1.0                    
Component:  Raster          |     Version:  svn-trunk                
 Keywords:  r.stream.order  |    Platform:  Linux                    
      Cpu:  x86-64          |  
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Comment(by hellik):

 Replying to [comment:2 hcho]:
 > I used the following command:
 > {{{
 > r.stream.order stream_rast=streams direction=drain hack=streamshack
 > }}}
 >
 > I didn't try it with the accumulation map, but it shouldn't make a
 difference in theory, I think?

 in all my tests I've used r.stream.order with an accumulation map and the
 results seemed to be ok.

 >
 > IMO, I got this problem because my streams raster has the single pixel
 tributary and the module cannot handle it properly. If I try with the
 accumulation map, it should work correctly because the accumulation map
 covers the entire region. I'll try and let you know.

 yes, please test with an accumulation map and report the results. the
 region should be large enough to cover all accumulation.

 maybe accumulation map should be marked as required for calculation for
 the r.stream.*.

 any helpful additions for the manual are welcome!

 thanks.

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Ticket URL: <https://trac.osgeo.org/grass/ticket/2298#comment:3>
GRASS GIS <http://grass.osgeo.org>