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= Tools > Join overlapping Areas =

[[Image(source:/trunk/images/joinareas.svg)]] ''Keyboard shortcut:'' '''{{{Shift+J}}}'''

'''Join areas that overlapping each other.'''

You can select two or more closed ways.
If one area is surrounded by the other(s) it will automatically create a multipolygon.
If the areas to join have different tags, a conflict dialog will show up. You need to choose there which value you want to use for the joined area. The options are:

* all single values of the different areas
* '''none''' - the key will be removed
* '''all''' - all values are used for a key, seperated by a semicolon

If the key is `capacity=*` or `capacity:*=*` there is one more option:
* '''sum''' - summs all numerical values of the selected areas

== Usage with buildings ==

[[Image(buildings-joinoverlappingareas.gif)]]

== See also ==
* [[Image(source:/trunk/images/combineway.png,20)]] [wiki:/Help/Action/CombineWay Combine Way]


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