How to convert null values to 0 in raster calculator?

ferranferrer

Hi,
I'm trying to convert null values to zero or other values in raster calculator.

Help say this but i don't understand
'1. Identify the NoData locations:
    Input raster = 'inRaster1'
    Output raster = 'outNullMap'

2. Perform Con on the results to give the original NoData areas a value:
    Input conditional raster = 'outNullMap'
    Input true raster or constant value = '100'
    Input false raster or constant value = 'inRaster1'
    Output raster = 'null100_final'
    Expression = 'Value = 1'

Thanks for your attention, ferran

Robert_LeClair

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