I have a point shapefile which I want to interpolate using IDW interpolation. However, I want to interpolate only those points which satisfies a certain condition. I need to do it in python and I think that I have to use definition query where only values that are not -999 should be used in the interpolation.
This is my code:
outIDW = Idw(fc, zField, cellSize, power, searchRadius)
I need to modify somehow the
fc shape to take into account only values that are different from -999.
This is my query: