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Combining shapefiles in ArcMAP?

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#1
Montana

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I am making a geologic map and have created quite a few shapefiles that overlay an imported topo map. Is there a way to combine some of these shapefiles (turn two features into one in the same layer)? I have tried modifying edges but that doesn't seem to be what I'm looking for.

Edited by Montana, 12 March 2010 - 12:11 PM.


#2
Laura Miles

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Use the ArcToolbox "Merge" tool (Data Management Tools > General) to put everything into one shapefile. If you need to dissolve the borders afterwards, use the "Dissolve" tool (Data Management Tools > Generalization).
Laura

#3
Montana

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Thank you! Does this work if I am just merging one feature from a layer to another rather than all the features from one layer to another?

#4
Laura Miles

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No...if you want to take one feature or polygon, if I understand what you are saying, you will have to take that one feature and make a shapefile of it first, then use merge. You can use the Select tool in ArcMap to select your feature, and once it is highlighted, right-click the layer in the table of contents and choose Data > Export Data. You will have the option to export the selected features only into a new shapefile.
Alternatively, you could maybe do some copy and pasting in an ArcMap edit session, but I haven't tried that out so not sure how it would work out.
Laura

#5
Ninomax

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Thank you! Does this work if I am just merging one feature from a layer to another rather than all the features from one layer to another?

I think Copy and Pasting in a Editing Session is the way you need exactly.

#6
Montana

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Thanks all.
Yes, I actually need to both move a feature from one layer to another AND merge two features that are already in the same layer. they currently share an edge but I would like to combine them so that they are the same feature. I think I remember exporting in a class I took so I'll try that for moving a feature from one layer shapefile to another, but will that help me merge them once they're in the same layer?

#7
Laura Miles

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You can merge them in an edit session, with both polygons selected use the merge tool from the editor toolbar.




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