Problem selecting alternate points from a set of points

Replies to This Discussion

Permalink Reply by Danny Boyes on July 17, 2012 at 8:19am

The issue is the data is stored on separate branches of the tree. You could use a similar approach to this one: http://www.grasshopper3d.com/forum/topics/2nd-item-from-every-2nd-r...

Where you cull every other item from a Param Viewer and use this new list to split the tree.

Permalink Reply by jayant khanuja on July 17, 2012 at 9:19am

thanks alot for your reply. will go through it and try .

regards

Permalink Reply by jayant khanuja on July 17, 2012 at 9:57am

Hi.

I applied your suggestion and it works well but only at one step it does not select alternative points. Cant figure out why that is happening.

Permalink Reply by Danny Boyes on July 17, 2012 at 10:17am

can you post the file?

Permalink Reply by jayant khanuja on July 17, 2012 at 10:48am

yah sure. 

Attachments:

• Ring_1.gh, 16 KB

Permalink Reply by jayant khanuja on July 18, 2012 at 5:28am

resending files

Attachments:

• Ring_1.3dm, 47 KB
• Ring_1.gh, 16 KB

Permalink Reply by Danny Boyes on July 18, 2012 at 6:11am

Ok you will need a different approach.

Have a look in the FAQ forum for the 2D Sorting topic, with in that thread there is a replay about polar sorting of points:

http://www.grasshopper3d.com/forum/topics/how-can-i-sort-in-two-dim...

I would flatten the list of points and then sort them around a circle before dispatching them into your lists

Permalink Reply by jayant khanuja on July 18, 2012 at 6:26am

will try this, thanks again

Permalink Reply by jayant khanuja on July 21, 2012 at 6:58am

Hi , can anyone help me understand where am i going wrong with these point selection.

I went through some tutorials but still can not figure out the problem.

Just can not figure out why the alternate selection does not work at just one intersection, in the rest it is working fine.

Attachments:

• Query_alternate point selection.gh, 13 KB