list items selecting more than one

I've created a grid of uv frames on a surface, and now I'm trying to select and modify them one at a time. I tried using list item, but this persistently selects either the top or bottom three (out of a grid of six) with an index of 0 or 1. This is probably only a problem because I don't fully understand the concept of the index. Either way, I have a grid of surface frames, and I would like to work on each separately, is there a good way for me to do this?

Thanks!

Replies to This Discussion

Permalink Reply by Danny Boyes on July 8, 2011 at 4:10pm

Usually the output from the division of a surface is a set of 'columns' i.e. for every division in the U direction a branch will hold all the Vs. Therefore if you try and select the 0 index of a list you will get all the 0 index Vs for every branch of U. To specifically pick one item from your data tree you are going to need the Tree Item Component where you specify both branch and item numbers.

branch = {0;0;0}

item = 0

would be the first item of the first branch.

Permalink Reply by Chris Tietjen on July 8, 2011 at 4:11pm

Can you post the definition as it is so far?

Chris

Permalink Reply by Benjamin Golder on July 8, 2011 at 5:04pm

You can also try using 'flatten' on the list of frames, which will turn them into one simple list rather than separate lists. This way, if you used list item, it would retrieve the one item, instead of retrieving one from each separate list.

Permalink Reply by Lauren Richards on July 8, 2011 at 5:16pm

That works great, thanks!

Permalink Reply by Aleksander Łapiński on September 7, 2013 at 4:04pm

Hey guys,

I guess I have a similar problem

I have one set of n points on an ellipse, and another one, that has n / 2 number of elements.

For every point from the 1st set, for example no. 0, i want to assign two points that happen to be "in between" , so no. 0 and 1. Any help ? I can make it by hand by list item for every point and flatten, but it works only for this particular amount of points, not when i make more of them by the number slider. Any help would be appreciated.

Cheers,

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Permalink Reply by David Rutten on September 8, 2013 at 2:13am

Are you just looking to weave the two lists of points into a single list?

David Rutten

david@mcneel.com

Tirol, Austria

Attachments:

VAULT.gh, 10 KB

Permalink Reply by Aleksander Łapiński on September 8, 2013 at 10:46am

Thanks for reply and help!

But I guess it seems that i didn't clarify my intentions. I wanted to create a set of curves, but with sharp endings. So i wanted to take those three points, and create a recurrent shape of a curve, like in a vaulting. This is what I could create, but it seems not to look as i imagined

Any ideas ? I will be grateful

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