sort points in a list

hi,

sorry for this simple question!
i try to find a way to sort/selct points in a list.
i just find a def. but i find myself not able to cope with it.
can you explain to me how such a common problem is best solved.
for example. what should i do to select the points
similar like the two example/picts.

thanks

Attachments:

sort points in list.3dm, 50 KB
sort points in list.gh, 4 KB

Replies to This Discussion

Permalink Reply by Danny Boyes on December 2, 2011 at 9:46am

2 Questions:

Are they always based on the edge of a Surface?

Or are they always in a regular grid?

I attach a file with 3 solutions 2 are based on the surface edges being a factor and the other one groups points based on a similar constant i.e x value or y value.

Attachments:

sortpointsinlist_solutions.gh, 18 KB

Permalink Reply by RWNB on December 2, 2011 at 9:59am

dear danny,

thanks a lot for the respond!

i showed at first only two pictures.
actually it should be as variable as possible.

now I try to understand your def...

Permalink Reply by RWNB on December 2, 2011 at 10:25am

dear danny,

how can i select thr points similar like the pict above

with your bounday method/curve method?

Permalink Reply by Danny Boyes on December 2, 2011 at 10:34am

try this

Attachments:

sortpointsinlist_solutions.gh, 8 KB

Permalink Reply by RWNB on December 2, 2011 at 10:59am

dear danny,

sorry for my slowness. i do not understand it until now.

the point are not selectet as the pict above.

aarrrg! (:

Permalink Reply by Danny Boyes on December 2, 2011 at 11:12am

I don't understand the problem then. I thought you wanted the first and last column and the top and bottom rows

To try and understand better. Are you after the points inside the yellow rectangles?

Permalink Reply by RWNB on December 2, 2011 at 12:02pm

dear danny,

yes, i want the points inside the yellow rectangles.

this problem can be solved when i plug the divide-curve-comp to the 4 edges.

This would be somewhat limited.

would this also reachable with your boundary curve method / method ?

thanks

Permalink Reply by Danny Boyes on December 2, 2011 at 12:08pm

So you want numbers 1 to 10 not just the cull list of 1,3,5,7,9.

If so then I you could either divide the curves again or apply the selection method to the original grid.

Permalink Reply by RWNB on December 2, 2011 at 12:45pm

dear danny,

we speak about boundary method, curve method and branching method. what is now the selection method. (:

maybe i understand your def. better tomorrow!

sorry and thanks a lot for your help!

Permalink Reply by Pieter Segeren on December 2, 2011 at 12:18pm

(actually the boundary method should work too, and I found out that it even works with a boundary on a curved surface:
http://www.grasshopper3d.com/xn/detail/2985220:Comment:489445)
Kind of surprised me too:)

Permalink Reply by RWNB on December 2, 2011 at 1:02pm

dear pieter

is in your def also possible to select the boundary pts?

Permalink Reply by Pieter Segeren on December 3, 2011 at 4:13am

Ehhm, seems my reply was not very suited for this discussion, I had just a minute to spare before going out and reacted a bit hasty. Sorry.
I take it you mean the points on the boundary? I hope these examples help you find what you want, because it's not too clear for me either what exactly you mean by sort points in a list.

Attachments: