Intersect 1 shapefile with multiple polygons

09-20-2013 09:43 AM
New Contributor II

I am working with Kernel Density contour areas of several birds (as polygon shapefiles) and I would like to calculate the area of the overlap of, say, Bird1 and Bird2, Bird1 and Bird3, Bird1 and Bird4, etc.
Using Intersect (Data Management) works for a one-to-one analysis, but is there a tool that allows to run a one-to-many analysis at once and store the results in the same table ?

I tried to use Iterate in ModelBuilder, but Intersect provides only one Input and therefore an iteration adds multiple shapefiles to the input and does a one-to-one-to-one-to-one analysis (bird1-to-Bird2-to-Bird3-to-Bird4) and not a one-to-many (Bird1-to-Bird2&Bird3&Bird4).

Any hints ?

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Regular Contributor II
Try Union
Then the bird 1 polygons will also have attributes of the other birds that are present.
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