[GRASS-dev] [GRASS GIS] #2053: r.recode: 0.0 or 1.0 as limits do not seem to be taken into account (was: r.recode is buggy when minimum "from=0.0")

[GRASS GIS]

#2053: r.recode: 0.0 or 1.0 as limits do not seem to be taken into account
------------------------------------------+---------------------------------
 Reporter:  nikosa                        |       Owner:  grass-dev@…              
     Type:  defect                        |      Status:  new                      
 Priority:  normal                        |   Milestone:  7.0.0                    
Component:  Raster                        |     Version:  unspecified              
 Keywords:  r.recode, DCELL, CELL, rules  |    Platform:  Unspecified              
      Cpu:  Unspecified                   |  
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Comment(by mlennert):

 I'm having a similar (probably related) issue:

 Given a raster map with a classic normalized difference index ranging
 theoretically from -1 to 1. The exact values are:


 {{{
 > r.univar mymap
 minimum: -0.971429
 maximum: 0.766129
 }}}


 When I recode using the following rules:


 {{{
 -1.0:0:0.0
 0:1.0:1.0
 }}}


 I get


 {{{
 > r.stats -c mybinarymap
 0 5804
 1 9487108
 }}}


 Changing the rules to


 {{{
 -0.99:0.0:0
 0.0:1.0:1
 }}}


 or


 {{{
 -1.0:0.0:0
 0.0:0.99:1
 }}}


 I get


 {{{
 > r.stats -c mybinarymap
 0 5626374
 1 3866538
 }}}

 Moritz

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Ticket URL: <https://trac.osgeo.org/grass/ticket/2053#comment:1>
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