0 Replies Latest reply on Apr 14, 2012 10:54 AM by dirgles

    Polygon zones and distributions within them?

      Apologies in advance, I'm new to spatial analyst...

      I have several irregularly-shaped zones, each with a count indicating the number of trips made in that particular zone.  I would like these trip totals to be distributed in each zone based on the distribution of points exhibited in a separate point layer. 
      Could someone point me in the right direction in terms of the tools to use?  It seems like the "zonal" tools aren't really what I need.

      Seems like 2 main steps:

      1) Create raster based on the point layer (counting the number of points in each cell).  This is my distribution layer.

      arcpy.sa.PointDensity(...) ?

      2) Create a new raster whereby the cells within each zone add up to the total "count" for that zone.



      Thanks !

      btw, I don't need to get fancy with accounting for the polygon boundary cells - results don't need to be super accurate.