[GRASS-dev] [GRASS GIS] #2564: r.what: remove 400 maps limit and add some new output options

GRASS GIS trac at osgeo.org
Wed Jan 28 15:16:02 PST 2015

#2564: r.what: remove 400 maps limit and add some new output options
 Reporter:  sbl          |       Owner:  grass-dev@…              
     Type:  enhancement  |      Status:  new                      
 Priority:  normal       |   Milestone:  7.1.0                    
Component:  Raster       |     Version:  svn-trunk                
 Keywords:  r.what       |    Platform:  Unspecified              
      Cpu:  Unspecified  |  

Comment(by huhabla):

 I have just committed a new temporal module called t.rast.what in trunk
 (r64349 - r64351) that utilized r.what to sample space time raster
 datasets using vector points. It provides three output layouts that
 transforms the r.what output into row or column layouts. It can run
 several r.what processes in parallel using a maximum of 400 raster map
 layer in a single r.what process.

 Please have a look at it.

 Any feedback about its performance, usefulness and handling is highly

 Improving r.what to allow more than 400 maps is simple, just edit the
 fixed value in the source. But, editing this value may cause open file
 handler limit problems with your OS. However, these limits can be adjusted
 at kernel level configuration for Linux.

 Implementing a more intelligent file handling solution requires more

Ticket URL: <http://trac.osgeo.org/grass/ticket/2564#comment:1>
GRASS GIS <http://grass.osgeo.org>

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