arcgis desktop - Iterating through columns in table using ModelBuilder?

I am unable to find any info on how to use ModelBuilder to run a certain spatial analysis function on each column in a table.

I have a table to sample locations and at each location there are a series of measures (e.g. temperature, flow rate, number of certain species). For each of those attributes (columns in the table), I was to run the IDW function from the surface tools.

This would be easy if I had each attribute in a separate shp/feature class, but not very efficient. I tried Iterate Feature Selection, but was unable to pass the field name as the Z value in the IDW function.

This is for ArcGIS 10.1 (Basic and Spatial Analyst license)

Answer

I believe you will need to build a small Python script and paste that into your Model. You would use the ArcPy module and build a field list on your layer:

fieldList = arcpy.ListFields("C:/Data/MyGIS.gdb/MyLayer")

and then you would iterate through the fieldList using a for loop, for example

for field in fieldList:
    #run your spatial analysis function on field