Is there a way to interpolate (IDW) while providing clipping geometry? My objective is that I want to interpolate temperature data but I do not want it to interpolate the entire extent of the point file but rather fit the output to the extent of a particular polygon. Thanks.
go to arctoolbox => 3d analyst tools => IDW => environments => Raster Analysis Setting => Mask
general setting => extent
you can use extract by mask tool .extract by mask is not good option to use interpolation.
I do not think that you can specify a clipping geometry as part of the IDW process, however you can perform a separate clip operation either on your input or your output data and automate this process using python commands.
I would caution that if you clip a subset of the points and then perform an IDW on the subset you will get a different surface than if you perform an IDW and then clip the result to your polygon.
Clip Before IDW
Clip After IDW