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To clarify, I designed a flow that would create no merged features in the original dataset - and for this I actually like Dissolve.
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07-04-2018
04:33 PM
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Edit > Merge does work fine for what I want to do, using New Feature option to leave existing features alone - but only manually. I can find no ArcPy function (the original question) for this. And doing this many times manually is no way to spend an evening. (Mine, anyway.)
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07-04-2018
02:49 PM
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Create a new dataset. I've given up on trying to find the kind of Merge I want in ArcPy. I can make my flow work with Dissolve - with a few more steps than I think should be necessary, but that's life. Darren's earlier response put Dissolve in my head, and I made that flow work in a testbed project.
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07-04-2018
02:26 PM
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Joshua, the Dissolve will create a very simple output feature class (single feature with just 3 or 4 attributes, one of them being an initially <Null> name field to be populated as the last step in the loop). Nothing from the source dataset will be disturbed. After the iterations, all of the identically structured one-feature output feature classes will be Merged into a single one.
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07-04-2018
01:48 PM
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Due to the attribution scheme I used, that would be really complicated. (But thanks - your reply was much appreciated, I'm likely to use it at some point.) My workaround, to be scripted, is to iterate this: 1) select by attributes (over a list of stored expressions), 2) make layer from selected features, 3) export the layer to a feature class, 4) select all from the feature class, and 5) dissolve.
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07-03-2018
05:15 PM
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Thanks, Dan, and sorry about my delay in response. I never found a capability in Pro, but this was easily done in Desktop. Oh, well. Maybe next round, eh?
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07-03-2018
03:49 PM
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Is there a way using ArcPy to merge features selected from the same layer into a new feature, exactly as the Edit > Merge tool does it? I want to script this, because several dozen merges need to be done on a series of feature selections (iterating through a list of saved SQL expressions). I looked, but could not find. I am working in ArcGIS Pro 2.0, but I also have ArcGIS Desktop 10.6 available. Thanks for your help.
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07-03-2018
03:44 PM
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In ArcGIS Desktop (aka ArcMap), there is a nice visual workflow setup for georeferencing. You can easily register source and target point pairs by going back and forth from one pane to another, side-by-side on the same screen, with no view manipulation, transparency adjustment, etc., necessary. Does Pro support this?
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01-28-2018
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