Sort points error

Hi guys. I have a problem: I don't know why GSH doesn't recognize the first point at lower left in 3RD LAYOUT, 1ST and 2ND are right. Hope that someone could help me.

Attachments:

TRY.3dm, 135 KB
TRY.gh, 3 KB

Replies to This Discussion

Permalink Reply by Landscape on April 10, 2013 at 3:28pm

I tried do substitute POLYGON CENTER with AREA, it works only for 2/6/9 item, but i need that all match. I don't know why I can't solve this.

Permalink Reply by Landscape on April 11, 2013 at 6:23am

Anyone? Maybe it's easy for you!! ;-)

Permalink Reply by Richard Schaffranek on April 11, 2013 at 6:31am

If you can provide a Rhino 4. version would be helpful.

If in the third layout the lower left point is the element with index 1 or 2 then

my guess is that you have to change the precision settings of your rhino file or move the points so that the x,y,z coordinates only have integer values or do both.

Permalink Reply by David Rutten on April 11, 2013 at 6:35am

Sort Points sorts points by X, then Y, then Z. This means that if two points have the exact same X coordinate, then Y becomes important. If the points do not have the same X (even if they are only one ten-millionth of an electron apart) then one of them will sort before the other. When you sort an aligned grid like this you will most likely run into tiny rounding errors that will give you a seemingly nonsensical sort order.

David Rutten

david@mcneel.com

Poprad, Slovakia

Permalink Reply by Richard Schaffranek on April 11, 2013 at 6:52am

nicely explained ....

Talking about it, does sorting of points uses the document tolerance settings?

Permalink Reply by David Rutten on April 11, 2013 at 12:03pm

No, tolerance is not used in the sorting algorithm.

David Rutten

david@mcneel.com

Poprad, Slovakia

Permalink Reply by Landscape on April 11, 2013 at 6:48am