Interpolating over Large Areas

Discussion created by darais on Oct 26, 2010
Latest reply on May 31, 2011 by kpurdon
Is there a trick to interpolating (IDW) over large areas such as 5 km squared?  I have about 1500 data points in this area.  It won't create a histogram of unique values after IDW has completed.  Sorry if this question has already been posted.  Any help would be much appreciated!