topic Re: Two Unions w/ Two outcomes. in Geoprocessing Questions

Two Unions w/ Two outcomes.

BrianCoward — Mon, 09 May 2011 15:07:15 GMT

Hello everyone,
I've got a routine in model builder that's working perfectly and when I copy that routine over as a base and begin to change the parameters to create different features it�??s changing the available fields at the Union. The source files are exactly the same but the outcome from the Union is different. I've tried changing the output location, name, creating a new union in the model, and countless other changes. Does anyone know how you can have a different outcome on a Union with the same source data? And more importantly... how can I correct this? Here are a few screen shots. Appreciate the help,
Brian

Re: Two Unions w/ Two outcomes.

DarrenWiens2 — Mon, 09 May 2011 15:22:39 GMT

Are you sure the fields are actually missing? It looks like many of the fields you highlighted are just in a different order lower down the list. Is it possible that the order of the Union inputs have been changed?

Re: Two Unions w/ Two outcomes.

Anonymous User — Mon, 09 May 2011 15:43:53 GMT

Original User: briancoward

dkwiens,
I do have way to many fields in there but no... after looking through another time it doesn't appear that the [Segment] field is coming through. The fact that it is, somewhat, alphabetizing the order of the fields in a different way from the Union with the [Segment] field is odd though. I'm not sure what it means... but it would help if the outcomes were consistent. Any other ideas? Thanks.

Re: Two Unions w/ Two outcomes.

DarrenWiens2 — Mon, 09 May 2011 15:51:44 GMT

When you look in the two Union tools, is the order of the inputs the same (e.g. COWS first, CMA second)?

Re: Two Unions w/ Two outcomes.

Anonymous User — Mon, 09 May 2011 16:40:31 GMT

Original User: briancoward

Yep... the same in both. I have noticed when I copy the routine over, initially, the [Segment] field shows up correctly. I modify the "Expression" in the Make Feature Layer tool to select the different polygons and when I check the Feature Class to Feature Class on the other side of the Union the [Segment] field still shows up. When I change the output name of the Union to match the new selection... the [Segment] field goes missing and the order changes to alphabetical. Not sure if that helps�?�