Retrieving the index values for the "True" Values on a list

Grasshopper
1

I have produced a list of True False values and I need to retrieve the index values of the True results.

Unfortunately “Item index” doesn’t accept boolean data. Any smart ideas on how I can do this?

Thanks in advance x

2

Use the Series component to generate an index list the same size as list of true/false values. Then use the Cull Pattern component to cull the index list.

If you want further explanation, post your code.

-Kevin

3

Thank you :smiley: You’ve saved me from an hour of frustration! :pray:

4

The posted solution by Kevin works perfectly well. But just for your continued reference, the component that does what you want is “Member Index” (Sets > Sets > Member Index).

4 Likes
5

Solution provided by @daniMunthali is definitely better, I need to make an effort to use the sets components more frequently.

-Kevin

1 Like