AnsweredAssumed Answered

Add (SUM) Multiple Rasters of different extents

Question asked by markieta on Feb 15, 2011
Latest reply on Nov 27, 2018 by phillip.burrows1
I am having trouble adding multiple rasters to create an overal classifications raster.

Currently, I have 3 criteria variables (polygons), which have been converted from vector to raster. Each raster represents a different extent of spatial coverage on my map (eg, highways, land usage, pop density by Census Tract... I am creating a human influence index)

I will use a simplified grid example, such as those used in the ArcMap help/resources.

Below you will see the addition (summation) of 3 raster grids, with the output that I am currently experiencing. This is NOT what I would like. (grey = nodata)

Here is an example of what I would like to happen.

I've spent too much time trying to figure this out. I hope someone can steer me to the right tool or option/setting?

Note: I am using ArcMap 10