Overlay analysis tools allow you to apply weights to several inputs and combine them into a single output. The most common application for Overlay tools is suitability modeling.
Learn about overlay analysisLearn about overlay analysis applications
The following table lists the tools that perform overlay analysis, provides a brief description of each, and identifies if the tool works in ArcToolbox, Map Algebra, or ArcObjects.
Tool 
Description 
ArcToolbox 
Map Algebra 
ArcObjects 
Weighted Overlay 
Overlays several rasters using a common scale and weights each according to its importance. 
X 


Weighted Sum 
Overlays several rasters by multiplying each by their given weight and summing them together. 
X 

