merging lists of lists

I have two lists I want to merge. Both lists are structurally identical, each containing twenty lists. I know the number of items in each of the twenty lists (they are the same in 'List 1' and 'List 2').

I want a merged list that contains list 0 from 'List 1', list 1 from 'List 2', list 2 from 'List 1', list 3 from 'List 2', etc.

See screen shot...

I understood 'Path Mapper' a year ago (forgotten!) but before investing more time trying to figure it out myself, I thought I'd ask first if anyone knows how to do this?

Code attached. Thanks.

Attachments:

merge_lists.gh, 20 KB

Replies to This Discussion

Permalink Reply by FRiou on June 1, 2015 at 1:57am

Hello !

Is this what you're looking for ?

Permalink Reply by Joseph Oster on June 1, 2015 at 7:59am

YES!!! Thank you FRiou so much. I was hoping it was that simple and had looked at the 'Split Tree' component but had no idea how to write the "mask" you did - VERY COOL!

Code attached.

Attachments:

merge_lists.gh, 22 KB

Permalink Reply by Joseph Oster on June 1, 2015 at 8:18am

P.S. I haven't watched this yet but it looks very useful:

Grasshopper Masterclass With David Rutten - 05 - Mask Notation Syntax

http://vimeopro.com/rhino/grasshopper-masterclass-with-david-rutten...

Permalink Reply by Raul Matagringo on June 1, 2015 at 2:01am

hi,

first step: isolate...

Attachments:

merge_lists_2.gh, 19 KB

Permalink Reply by Joseph Oster on June 1, 2015 at 8:05am

Thanks Raul, your approach works too. The differences are:

you need to 'Simplify' the input lists for 'Branch' to work.
you need the extra 'Series' components to select alternate rows while the 'Split Tree' component uses the 'M (Mask)' input to accomplish the same thing.

Code attached using your method. Thanks guys!

Attachments: