Adding raster datasets - raster calculator

[Anonymous User]

Original User: fpoodat

Hi,

I am trying to add some raster layers which are a bit different in the area they cover (extent).

Through this adding process, the pixels which are outside the extent of each input raster become "No data" and No data + a value will be No data. so the resultant raster covers the least common area of all the input data.

How can I get the ArcGIS to consider the "no data" value as "0" in this process?

Cheers,
Fatemeh

[TimothyHales]

Check out this blog post - Null Doesn�??t Mean Zero?: How to add different-sized rasters with NoData Values

[Anonymous User]

Original User: fpoodat

Hi Timothy

It was worked out. According to that blog information, I defined a shape file with the suitable extent. Then through the adding process, I set the extent to the shapefile layer.

Now they are all the input rasters match and so I have got the result with the most extent.

Cheers,
Fatemeh