[GRASS-dev] [GRASS GIS] #1980: Multiple time stamp support for raster and 3D raster maps

GRASS GIS trac at osgeo.org
Mon May 27 00:17:24 PDT 2013

#1980: Multiple time stamp support for raster and 3D raster maps
 Reporter:  huhabla                                         |       Owner:  grass-dev@…              
     Type:  enhancement                                     |      Status:  new                      
 Priority:  normal                                          |   Milestone:  7.0.0                    
Component:  LibGIS                                          |     Version:  svn-trunk                
 Keywords:  timestamp, multiple, temporal, category, layer  |    Platform:  All                      
      Cpu:  All                                             |  
 i would like to implement the support of multiple timestamps for single
 raster and 3D raster maps in libgis and the temporal framework. Multiple
 timestamps are already possible for vector maps. The layer identifier
 (number or string) of a vector map is also used to specify the layer/table
 specific timestamp. Hence several timestamp files are located in a vector
 directory using the naming scheme "timestamp_$layer".

 The same can be implemented for raster and 3D raster maps. The timestamp
 files will be located in cell_misc/raster_map using the same naming scheme
 as vector maps. Backward compatibility will be assured. Hence the default
 timestamp file has no layer extension and the layer definition is

 In the future we can use the raster "layer" concept to point to different
 category definitions.

 I would like to use the definition "layer" also for the raster maps. I
 hope this is not to much confusing for users? IMHO basically its the same
 concept as for vector maps, instead of a pointer to a different table, the
 layer for raster maps points to a different category definition?

 For now implementing multiple timestamp support is sufficient for me.
 Multiple category support can be planned for GRASS8? However, the naming
 scheme should be usable for further improvements.

 Any suggestions are welcome.

Ticket URL: <http://trac.osgeo.org/grass/ticket/1980>
GRASS GIS <http://grass.osgeo.org>

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