[GRASS-dev] [GRASS GIS] #1401: r.series for time series

GRASS GIS trac at osgeo.org
Sat Jul 9 14:52:36 EDT 2011


#1401: r.series for time series
---------------------------------+------------------------------------------
 Reporter:  mmetz                |       Owner:  grass-dev@…              
     Type:  enhancement          |      Status:  new                      
 Priority:  normal               |   Milestone:  7.0.0                    
Component:  Raster               |     Version:  svn-trunk                
 Keywords:  raster, time series  |    Platform:  All                      
      Cpu:  All                  |  
---------------------------------+------------------------------------------
 The attached patch adds weighing windows to r.series. This is useful for
 interpolation of NULL cells in time series data, e.g. with
 {{{
 r.series method=average window=gauss
 }}}
 which will provide more realistic results than the same command without a
 weighing window.

 The weighing windows are taken from r.resamp.filter with modifications to
 the gauss and normal windows to make them pseudo-finite. At the moment,
 only one windowing function can be selected, i.e. coupling an infinite
 window with a finite window is currently not possible. In contrast to
 r.resamp.filter, the sinc window will never have negative weights. In my
 tests, the hann, hamming, and blackman windows seem to produce reasonable
 results even without coupling with a finite window.

-- 
Ticket URL: <https://trac.osgeo.org/grass/ticket/1401>
GRASS GIS <http://grass.osgeo.org>



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