[GRASS-dev] [GRASS GIS] #2686: r.hazard.flood error output

[GRASS GIS]

#2686: r.hazard.flood error output
---------------------------+---------------------------------
  Reporter:  zimbogisgeek  |      Owner:  grass-dev@…
      Type:  defect        |     Status:  new
  Priority:  normal        |  Milestone:  7.0.1
 Component:  Addons        |    Version:  svn-releasebranch70
Resolution:                |   Keywords:  r.hazard.flood
       CPU:  All           |   Platform:  All
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Comment (by neteler):

 Replying to [comment:4 madi]:
 > Replying to [comment:3 lucadelu]:
 > > Hi Madi, but the code is dividing the same maps
 > >
 > > {{{
 > > "$r_flood_map = $rast1 / $rast1"
 > > }}}
 > >
 > > so it return for every pixel 1, is it the right behavior?

 The behaviour in question comes from r.mapcalc:

 > yes, the expected result is a binary map (yes=1, no=null)

 Here a quick test:

 {{{
 r.mapcalc "result = 1/1"
 r.univar -g result | grep 'min\|max\|null'
 null_cells=0
 min=1
 max=1

 r.mapcalc "result2 = 0/0"
 r.info result2 | grep 'min\|max\|null'
  |   Range of data:    min = NULL  max = NULL

 r.mapcalc "result3 = null()/null()"
 r.info result3 | grep 'min\|max\|null'
  |   Range of data:    min = NULL  max = NULL
 }}}

 Is this what should happen in r.hazard.flood?

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Ticket URL: <https://trac.osgeo.org/grass/ticket/2686#comment:5>
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