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Results tagged with raster-calculator
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user 134283
A tool in some GIS software programs for performing algebraic operations on rasters.
4
votes
1
answer
197
views
Is it possible to do raster calculations with ST_Union (PostGIS)?
I would like to perform raster calculations in PostGIS. (A change detection should be performed, for this purpose every pixel of different raster is accessed and it is checked if the pixel values have …
- 330
2
votes
Accepted
Is it possible to do raster calculations with ST_Union (PostGIS)?
When more complicated calculations are performed as returning the average or maximum value of multiple grids, ST_MapAlgebra should be used and not ST_Union.
A tutorial which shows a better example tha …
- 330