Cull by List Length

Hello,

I'm trying to cull a list of items by the length of lists. Specifically, I have split a series of surfaces to be panelized in Revit, and I need to separate out the panels by the number of edges.

The way the data tree is set up, { A ; B} (i), A = face of the brep, B = face to be sent to Revit, i = # of edges on the face.

My plan was to use List Length to set up a bitmap to feed into the Cull List component where, when the (list length) = 4 would make 1, (list length) = 3 or =5 makes 0. But List Length is always putting out 1 for these lists.

Any suggestions are appreciated.

Replies to This Discussion

Permalink Reply by Tyler Kvochick on April 14, 2014 at 12:21pm

UPDATE:

So List Length is working correctly. What I still can't get is an if/then statement where

if (list length) = 4, then write 1

Permalink Reply by Danny Boyes on April 14, 2014 at 12:28pm

use [Equality].

[List Length] --> (A)[Equality]

4 --> (B)[Equality]

[Equality](R) is 1 if = 4 and 0 <> 4

Permalink Reply by Tyler Kvochick on April 14, 2014 at 12:42pm

Haha, Got it right before your reply. Thank you though. I'm now having a new problem with the culled list though. Some of the branches are coming out with no data at all

Replace Null Item doesn't seem to be working. Do I need to cull my culled list? That makes it seem like something is wrong upstream.