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Do IDWs (Geostatistical Analyst) include null values?

Question asked by AshleyNJDouglas on Jul 25, 2017
Latest reply on Jul 26, 2017 by slynch-esristaff

I have a large data set with point data and there are a few points that have null values on certain days (the sites didn't record data for that particular day).  I wanted to produce a map using IDW (Geostatistical Analyst tool) for these points on different days but I did not want to the IDW interpolation to include the null values.  


How do I ensure this doesn't happen?


Any help would be much appreciated!