how to create a custom rectangle with specified width and lenght to use in model builder? any suggestions?
If you just need the extent of the polygon and not the actually polygon itself, then you can set the analysis extent to the desired shape. If you actually need a rectangle, you can create a featureclass/shapefile with a python script. What approach do you need?
I need to create a rectangle over an exsisting polygon. This rectangle must be 4 times bigger than existing polygon.
You can do the math and create a featureclass in the normal way specifying the points that produce the proportional area you need. There a number of point combinations that one could create and the will be affected by the desired width and/or height you choose. You will be constrained in both directions by the diameter of the circle, but you can scale the height and width to a accommodate your desired area
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