topic Re: Merge all iteration output to single output in modelbuilder in ModelBuilder Questions

Merge all iteration output to single output in modelbuilder

AbdullahAnter — Fri, 22 Apr 2016 21:35:57 GMT

In the model builder, I have different result of features on every iteration inside same model.

How can I merge all result feature to single output feature class ??

Re: Merge all iteration output to single output in modelbuilder

DanPatterson_Retired — Fri, 22 Apr 2016 21:48:31 GMT

Merge—Help | ArcGIS for Desktop is for featureclasses etc, but I suspect you are looking for

Merge Branch—Help | ArcGIS for Desktop

Re: Merge all iteration output to single output in modelbuilder

AbdullahAnter — Fri, 22 Apr 2016 22:02:57 GMT

no that is not what I want.

I want to merge iteration results in feature class

I can do this if I know how can I make one tool inside model not run except the last iteration.

Re: Merge all iteration output to single output in modelbuilder

DanPatterson_Retired — Fri, 22 Apr 2016 22:08:16 GMT

so the first merge is to merge the results of an iterator A quick tour of using iterators—Help | ArcGIS for Desktop

and if you have separate processes, you can merge the separate processes... which may have an iterator in them... into a final output.

So you have merging results of branched processes, merging the results of an iterator and merging the results of multple processes. The tools are all outlined in the lines.

Re: Merge all iteration output to single output in modelbuilder

AbdullahAnter — Fri, 22 Apr 2016 22:13:57 GMT

I didn't find in that link any topic about merge the results of an iterator A quick tour of using iterators—Help | ArcGIS for Desktop .how can I do that??

then I can't separate my processes ,because it only one processes but every iteration give me other feature,

I use feature selection iteration . so every iteration different result , and I want to add all result in one feature class.

Re: Merge all iteration output to single output in modelbuilder

DanPatterson_Retired — Fri, 22 Apr 2016 22:19:36 GMT

so every iteration produces a new output... correct? If it does, then you can merge those results using the conventional merge tool.

if you want to iterate through featureclasses, or a whole list of things... you use an iterator.

if you want to merge the results of separate or parallel processes, you merge the branches together with the merge branch tool

if your model is getting too complex.. it is time to break up your processes into separate models and leave them separate.

A picture of your model would help.

Perhaps others may have suggestions given none has been of use so far.

Re: Merge all iteration output to single output in modelbuilder

AbdullahAnter — Fri, 22 Apr 2016 22:23:07 GMT

what is the conventional merge tool?

Re: Merge all iteration output to single output in modelbuilder

DarrenWiens2 — Fri, 22 Apr 2016 22:24:58 GMT

See this thread to see how to merge outputs of an iterator:

Merge error after Iterate Feature Selection

Re: Merge all iteration output to single output in modelbuilder

DanPatterson_Retired — Fri, 22 Apr 2016 22:56:57 GMT

it is called Merge check the links I already posted

Re: Merge all iteration output to single output in modelbuilder

AbdullahAnter — Fri, 22 Apr 2016 23:00:39 GMT

I tried to separate my model sub model for iteration and other to put first one and merge tool,

and I use variable substitution for sub model output , and the model run but the result was for last iteration only.

Re: Merge all iteration output to single output in modelbuilder

DarrenWiens2 — Fri, 22 Apr 2016 23:36:09 GMT

Did you collect the values with Collect Values?

Re: Merge all iteration output to single output in modelbuilder

curtvprice — Sat, 23 Apr 2016 01:42:42 GMT

And did you uniquely name each output in the iterator by naming it something like "tmp%n%"? Otherwise the iterator will just overwrite on each iteration! (The examples in the help demonstrate this.)

Re: Merge all iteration output to single output in modelbuilder

AbdullahAnter — Sat, 23 Apr 2016 03:02:52 GMT

yes I did that I put %n% in the end, but I have last result only.

that is because merge tool run in every iteration, isn't that. but that is not that what I want.

I want to collect all iteration data in one merge, not many merge in every iteration

(one merge for all iteration)

Re: Merge all iteration output to single output in modelbuilder

AbdullahAnter — Sat, 23 Apr 2016 03:09:51 GMT

no I didn't

but if I put collect value, will collect from first iteration to last iteration or last iteration only

and if the input are features, Is collect value tool output features or not?

Re: Merge all iteration output to single output in modelbuilder

AbdullahAnter — Sat, 23 Apr 2016 04:42:44 GMT

I made it.

the solution is replace merge tool with append tool.

it was on that link : Problems Integrating Sub-Model into Master Model

Re: Merge all iteration output to single output in modelbuilder

DanPatterson_Retired — Sat, 23 Apr 2016 09:42:36 GMT

It would have been useful since most of use were under the assumption that you wanted to produce a new output rather than appending to an existing output. Append adds to an existing output (which isn't a good idea for a variety of reasons) and Merge produces a new output, leaving the inputs to the model unaltered.

I hope you weren't producing a new output then appending to it, since that is a problem with collecting the results from iterator.

From the help...

To combine input datasets into a new output dataset, use the Merge tool.

I think Darren's suggestion is still the correct one, but we didn't get to see your model

Re: Merge all iteration output to single output in modelbuilder

AbdullahAnter — Sat, 23 Apr 2016 09:48:37 GMT

No Dan, I want to make accumulative features from each iteration.

I tried Merge tool and Append, But Append tool is the right.

thanks for help

Re: Merge all iteration output to single output in modelbuilder

DanPatterson_Retired — Sat, 23 Apr 2016 09:56:06 GMT

i guess it isn't clear what you are appending to then. Obviously you are appending to one of the elements used as input into the iterator (thereby changing it), rather than collecting the results of the iterator to produce an output. Seeing that part of the model would be interesting to see where that would be useful.