How can I count the number of external vertical edges?

Revit
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or can I get the outer curve of these walls from intersection of a plane ?

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finding a point inside room#2.dyn (77.7 KB)

This should get you so far but it is just a start. You need to create an external room and test if the wall edges are inside this room.

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Screenshot 2018-02-17 14.31.13.png1366Ă—768 231 KB

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Thanks a lot @simon_murphy1 :smiley:

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This should work if you still looking.

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Screenshot 2018-02-20 14.23.17.png1551Ă—740 58.7 KB

finding external corners.dyn (31.4 KB)

1 Like
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Hello,
@simon_murphy1

i have similar question… can i find external walls using your code ?

or i must to create new post…

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I think you can find external walls by their name with the node Wall.byname

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@abdelgawad
using parameter value (function - internal or external walls)e.t.c ?

it doesn’t match
i ll need to use geometric characteristics of walls

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im sorry
i think i must open new post…

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thanks simon for this better solution, but it does not work in the best way and I do not why !!
first I used the node " Select Model Elements " instead of yours to be able to select multiple walls.
but when I run you file it give me this warning and this result.1

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Use the first node to select the external room

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You need to create a room outside of all the walls and then select the room.

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I know this is an old post, but when I try it I get a lot of warnings and errors.