topic Re: branching in model in ModelBuilder Questions

branching in model

ScottTaylor3 — Thu, 02 Aug 2018 00:17:31 GMT

I have created a model that clips, projects and then writes a raster to a floating point output. I would like to be able to insert a true/false or if/then else type switch before running the float tool to enable the final out put to be selected by the user, that is, stopping it before the float tool if desired. I don't use Python. Is there a way to branch the model to either run the float tool or not?

Re: branching in model

DanPatterson_Retired — Sat, 04 Aug 2018 04:40:04 GMT

If-then-else branching and logical tools—ArcGIS Pro | ArcGIS Desktop

has a number of branching options

Re: branching in model

ScottTaylor3 — Mon, 06 Aug 2018 01:39:07 GMT

Thanks Dan, but that's Arc Pro, we use 10.4...

Re: branching in model

DanPatterson_Retired — Mon, 06 Aug 2018 01:50:18 GMT

There are equivalent branching in ArcMap,

Using If-Then-Else logic for branching—Help | ArcGIS Desktop

Re: branching in model

ScottTaylor3 — Mon, 06 Aug 2018 01:55:33 GMT

Thanks again, but that requires python (which does my head in!). I should have said that we use 10.4 in my original post, sorry about that. I've circumvented the need by retaining data created in the intermediate steps but I'd still like to know if there's a way to use the one model but prevent unnecessary steps.

Re: branching in model

DanPatterson_Retired — Mon, 06 Aug 2018 02:33:47 GMT

The details are sometimes in the fine print. So it is a simple calculation, give it a try.... or create two models for each option... or just skip the option.

As an alternative to writing a script tool, you can also use the Calculate Value tool to test the condition and output a Boolean.

Re: branching in model

ScottTaylor3 — Tue, 07 Aug 2018 03:15:34 GMT

Yep, tried the calculate value tool without success. It just surprises me that no obvious tool exists to allow an option to branch in a model tool where a sequence of steps is the whole purpose. Oh well!

Re: branching in model

DanPatterson_Retired — Tue, 07 Aug 2018 03:29:30 GMT

Examples of using logical tools in ModelBuilder—Tools | ArcGIS Desktop

If Value Is section

You need input parameters to your model then like "Float the stuff" (in place of are you flexible with the price)

If you have no model parameters, then no choices can be made. Branch your model from there.

The user has to make the choices upfront obviously

Re: branching in model

curtvprice — Sun, 19 Aug 2018 01:06:08 GMT

Great discussion of this topic in this old blog post series - but still relevant for ArcMap (Pro has some new branching functionality!):

If You Are Stuck At If‌