How not to keep the index when merging a list of points?

Replies to This Discussion

Permalink Reply by Arthur Mamou-Mani on February 1, 2011 at 7:24am

It works when removing one unused branch in one of the list but gives a very strange tree structure as output. How could I get a "regular" grafted tree as output?

 

Permalink Reply by David Reeves on February 1, 2011 at 7:48am

Hey Arthur,

You could modify the last path index of each group so that the two trees are staggered.

ie. if both incoming trees have the structure {A;B} (i)

tree 1 target {A;B *2}

tree 2 target {A;B *2+1}

 

Attachments:

• path_merge.ghx, 131 KB

Permalink Reply by Arthur Mamou-Mani on February 1, 2011 at 8:05am

Perfect! Thanks a lot David.

Why is the B multiplied by 2 first, isn't +1 enough to stagger ?

If I would like to group the result in pair should I do it afterwards ?

Cheers

Permalink Reply by David Reeves on February 1, 2011 at 9:58am

No problem.
You gotta get the *2 in there though, otherwise you'd get one tree with a shifted path index instead of the staggering.

ie. with only +1 on the second tree let's say

tree1 would look like {0;0}, {0;1}, {0,2}, {0,3} ...
tree2 would look like {0;1}, {0;2}, {0;3}, {0,4}...

 

For pairing the resulting tree you could do something like this afterwards
{A;B} -> {A; floor(B/2); B}

Attachments:

• path_merge.ghx, 137 KB

Permalink Reply by Arthur Mamou-Mani on February 1, 2011 at 12:47pm

Thanks David, very helpful.