Weighted Overlay Tool

SusanBien

Can the weighted overlay tool be used with just Vector data (no raster layers)?  For instance I want to prioritize the installation of signaled crosswalks based on proximity to schools, recreational facilities, multifamily housing, etc.

XanderBakker

Can the weighted overlay tool be used with just Vector data (no raster layers)?  For instance I want to prioritize the installation of signaled crosswalks based on proximity to schools, recreational facilities, multifamily housing, etc.

Hi Susan,

The Weighted Overlay analysis only works on raster data:
http://resources.arcgis.com/en/help/main/10.1/index.html#//009z000000rq000000

If you want to perform this analysis in vector format, you will need (preferably) polygon data of all aspects and perform a Union (or multiple unions if you don't have an Advanced/ArcInfo license):
http://resources.arcgis.com/en/help/main/10.1/index.html#//00080000000s000000
http://resources.arcgis.com/en/help/main/10.1/index.html#//000800000010000000

This will result in a polygon layer with smaller polygons and mixed attributes of all your input layers. Then in the attribute table of that feature class, you will have to use field calculations to perform a personalized "weighted overlay".

Can you explain why you want to do this analysis in vector format?

Kind regards,

Xander