Grasshopper

algorithmic modeling for Rhino

Adding numbers in a list according to another list

Hello everybody,

I'm looking for a way to add numbers in a list according to another list.

I have two lists like the attached file, and I want to do addition with numbers in the list on right (the value list) corresponding to the list on left (the ID list).

Which means something like

S-0: 4.0+1.0=5.0

S-1: 6.0+6.0=12.0

S-3: 7.0+4.0=11.0

            .

            .

            .

S-5: 8.0+5.0=13.0

and I don't want to add numbers with ID "0"

Any help would be appreciated.

Thanks.

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Permalink Reply by Hyungsoo Kim on October 5, 2016 at 12:11am

Hi.

What's the purpose of "partition List"?

Anyway, Check attached definition. Best.

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Permalink Reply by Katie Jurugi on October 5, 2016 at 5:23am

thanks alot Hyungsoo!

im working on kind of confidential project and I couldnt upload original gh file.

so i just wanted to reproduce only part of the gh definition that i had problem with and the structure of lists from the original file had branches.. thats all haha

but anyways thanks again!

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