This doesn't seem to work for me. the "VALUE IS NULL" returns no records. The only way I've found to do this successsfully is by the method described here using two GP tools (CON and IS NULL): http://help.arcgis.com/en/arcgisdesktop/10.0/help/index.html#//009z000000ms000000.htm It would be really nice if there was a way to do this with a single command... Hi Ferran - Instead of the raster calculator, I would use the CON geoprocessing tool in the Spatial Analyst toolbox. The syntax for the GP tool would be as follows: in_conditional_raster = your input raster in_true_raster_or_constant = 0 in_false_raster_or_constant = your input raster where_clause = VALUE IS NULL If the raster cell evaluates as TRUE (i.e. IS NULL), the cell gets a value of 0. Else if the raster cells evaluates FALSE (i.e. IS NOT NULL), then the raster cell gets the original input raster cell value. Good luck! Robert LeClair Esri-Denver
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