I'm trying to streamline a model that identifies all zones that intersect each parcel in our Local Government Area (eg. Parcel x has Zone B1, B2 and E4). I am trying to make use of iterators in ArcGIS10. The problem is in bold italics below;
I have a Zones layer and a Parcels layer. I select all polygons of Zone A (using iterate feature selection) then do a select by location to get parcels that intersect those selected polygons. I now want to check if Field1 is empty, if it is, use calculate field to populate Field1 with the "Zone A" value used to select my zone in the first place. I then continue with some simple if-then-else logic and the model then iterates with Zone B. I built a working version of this in ArcGIS 9.3.1 that works but it is extremely cumbersome and making small changes to the process is very time-consuming.
Any suggestions are much appreciated.
P.S. I have no python experience and only a little VB knowledge but if writing an arcpy script is the only solution to my problem then I'm more than happy to start learning!