[GRASS-dev] Re: [GRASS GIS] #474: r.quantile: segfaults with percentile=100

GRASS GIS trac at osgeo.org
Tue Feb 10 18:58:21 EST 2009


#474: r.quantile: segfaults with percentile=100
---------------------+------------------------------------------------------
  Reporter:  hamish  |       Owner:  grass-dev at lists.osgeo.org
      Type:  defect  |      Status:  closed                   
  Priority:  major   |   Milestone:  6.4.0                    
 Component:  Raster  |     Version:  svn-develbranch6         
Resolution:  fixed   |    Keywords:  r.quantile               
  Platform:  Linux   |         Cpu:  x86-32                   
---------------------+------------------------------------------------------
Comment (by hamish):

 Replying to [comment:1 glynn]:
 > This also fixes a bug where the quantile corresponds to the
 > last value in the bin (e.g. if there is only one value in the
 > bin). The interpolation will use the first value from the bin
 > for the next quantile, which could be way off.


 I notice that if you do 'quant=3' you only get 2 results, and 'quant=1'
 gives no output. (all others do the same, report n-1)

 Is this intended because 3 bins will have two separators (at 33% and 66%),
 or is it a bug?


 Hamish

-- 
Ticket URL: <https://trac.osgeo.org/grass/ticket/474#comment:4>
GRASS GIS <http://grass.osgeo.org>


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