[STATSGRASS] Re: [GRASSLIST:577] Change of spatial support
hamish_nospam at yahoo.com
Wed Apr 5 07:03:40 EDT 2006
> I am trying to change the spatial support (grid size) of some floating
> point raster maps from 250x250m to 1000x1000m. It's a kind of
> upscaling or more preciseley aggregation.
> All I need to do is to superimpose the larger grid on the smaller grid
> and compute the average and variance for the larger grid from the 4x4
> 250m cells located within one 1000m cell.
> I recognise that this is still not possible in GRASS. The GRASS
> resampling methods for change of resolution, such as r.neigbors or
> g.region are not an option as they do not provide a simple averaging
> method and the aggregation error (variance).
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