topic Re: Model Builder Collect Values tool empty results problem in Geoprocessing Questions

Model Builder Collect Values tool empty results problem

HilalAl-Rajhi — Tue, 14 Sep 2021 09:37:30 GMT

I am creating model that merges all polygon feature classes into one feature class. I am using feature class iterator to feed collect value tool list. When dataset has polygons it work fine. But when there is no polygons in dataset it always retrieve one invalid record as "gdb/Dataset/FeatureClass". Of course gdb url and dataset and correct, except that FeatureClass is not valid. So when I get the list and try to merge this list it throws error of invalid parameter. How can I avoid adding this record to my list?

Re: Model Builder Collect Values tool empty results problem

DanPatterson — Tue, 14 Sep 2021 10:08:38 GMT

Are you iterating and specifying the feature type to collect as in the demo?

Iterate Feature Classes (ModelBuilder)—ArcGIS Pro | Documentation

Do you branch using if-else syntax if collect values is none?

Re: Model Builder Collect Values tool empty results problem

HilalAl-Rajhi — Thu, 16 Sep 2021 06:21:22 GMT

Yes Mr. Dan, it is sort of like that, but I am iterating through dataset not workspace level.

I will try do branching and see outcome.

Re: Model Builder Collect Values tool empty results problem

HilalAl-Rajhi — Sun, 19 Sep 2021 09:08:59 GMT

Here is a snapshot of the issue:

Re: Model Builder Collect Values tool empty results problem

HilalAl-Rajhi — Mon, 27 Sep 2021 08:56:24 GMT

Most of my datasets has polygons feature classes, except for one that makes the problem

Re: Model Builder Collect Values tool empty results problem

DanPatterson — Mon, 27 Sep 2021 10:23:03 GMT

You will need to check for that then with the filter "Feature type" set to Polygon as in the link I sent

Iterate Feature Classes (ModelBuilder)—ArcGIS Pro | Documentation

Re: Model Builder Collect Values tool empty results problem

HilalAl-Rajhi — Mon, 27 Sep 2021 20:19:27 GMT

Would you please Mr. Dan send sample model demonstrating that. I really couldn't grasp the idea. Thanks

Re: Model Builder Collect Values tool empty results problem

HilalAl-Rajhi — Sun, 17 Oct 2021 09:43:14 GMT

I am still struggling with this incase someone has an idea. Thanks in adavance