topic Modelbuilder - Add and Calculate Fields in ModelBuilder Questions

Modelbuilder - Add and Calculate Fields

J_Hatton — Wed, 30 May 2012 22:43:32 GMT

Hello folks,

I need to construct a model that will iterate through a folder containing subfolders of shapefiles (NOT in a geodatabase), add a field to each of them, and calculate values for that field. What I have constructed, instead, is a model that correctly adds the field to every shapefile but calculates the values for only the first shapefile. The others are left with zeroes. I suspect this is something quite simple, but I don't know what I'm doing wrong. Thanks for your help!

Artemis

Re: Modelbuilder - Add and Calculate Fields

JonathanQuinn — Wed, 30 May 2012 23:43:35 GMT

Can you share your model so we can take a look at it? I assume you're using an iterator, such as Iterate Feature Class, (which will work with shapefiles), and then building your model off of that. What values are you calculating into the field?

Re: Modelbuilder - Add and Calculate Fields

J_Hatton — Thu, 31 May 2012 16:45:24 GMT

Hello again,

I'm not sure what's the best way to show the model- I can't do a screen grab. I'm attaching the zipped toolbox.

Yes, I am using Iterate Feature Class. I have a bit of code in the Calculate Field tool that populates the field with sequential numbers beginning with 1. It works a treat for that first shapefile. I have also tried running the model with just the number 3 being put into that field, and again, it works for the first shapefile but the others remain 0.

The input variable is currently defined as a workspace, but I have also tried using "Folder" as the input variable and get the same result.

Thanks-
Artemis

Re: Modelbuilder - Add and Calculate Fields

J_Hatton — Fri, 01 Jun 2012 22:26:13 GMT

.......anyone?..................crickets...........................