Hello,
Im getting this error when im using the bounding rectangle:
1. Solution exception: Object reference not set to an instance of an object.
I’m attaching my file where you can see there are 2 configurations. It works in the top one (I’ve pulled down the section where it is to make it easier to find) but not in the bottom and I cant for the life of me figure out why.
Thank you in advance for any help you can offer.
wave tween.gh (77.5 KB)
I guess you only have to get rid of the Nulls.
Does this work for you?
wave tween.gh (80.3 KB)
Thanks for your help. What does “internalize” mean? how do i do that?
That Worked! thank you! I didint know about the clean tool and in general I’m having a hard time understanding how trees work. i did some digging and discovered that my issue started with the “sift” node. If i connected the bounding rectangle before the sift it was fine but after the sift it wouldnt work. Do you know why that would be?
thanks again
sifting splits a list in two branches based on a boolean pattern.
as a simple example let’s say that you have a list like this {A, B, C, D} and a sifting pattern {True, False, True, False}. Sift will give you two lists like this: {A, Null, C, Null} and {Null, B, Null, D}. to get rid of the nulls you have to use the Combine component which will bring everything back together as {A, B, C, D}.
The Clean Tree component is not recommended if you intend to get back to the original list and the same order of the elements.
Thats really helpful. thanks so much. I’m using this as a way to make drawings with a pen plotter so im trying to keep the pattern to the end as a way of separating colors. without grassopper its super tedious so im trying to automate the boring stuff but i think im spending more time setting up grasshopper than i would otherwise. anyway I think this should get easier eventually 
