I am trying to create room separator from model lines, I put a graph together like below, then received warning, Anyone has an idea? [image]

Hello, Hello, to dig on this side maybe [image] cordially christian.stan

Play with List levels and Flattened Lists, or try it one Level at the time. Taking into account having only the Lines that belong on that Level. Then complicate it

I’m guessing that your lines must be on the sketch plane. There is 100% certainty that the line element N doesn’t lay on the same plane as level N.

I tried one floor with lines on it, but still doesnt work :upside_down_face:

Have to also consider curved lines, so this wouldnt work

[image] Here is screenshot for Error, It doesnt really pin point the problem，thanks for your help

Hi @bonnie_zhang these element lines need to be curve, so try element curve and probably needs to be grouped for loops try archilabs groupe curves

Add an Element.Geometry node after the All Elements Of Category node so that you have geometry instead of Revit lines.

yes :wink: and play around with some list level lacing in that case, with many views and levels

RoomSeparator.FromCurve

Revit

Marcel_Rijsmus August 7, 2023, 9:36am 14

i think there is a node called FirstItem that wil create the singleton.

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RoomSeparator.FromCurve

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