Point clusters

Hello Folks,

I was wondering if it is possible to create some logic for an attractor pulling magnetically points togther and finally bundle them in "clusters". Would mean if theese points are undercutting a setted minimum distance towards each other they get reduced.

For instance: if two points are undercutting the min dist the definition says draw a line between theese guys and take the midpoint.

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090610_siteshot.jpg, 1.2 MB

Replies to This Discussion

Permalink Reply by J.Filigran on June 11, 2009 at 9:37am

You could find the closest neighbor for each point and then measure the distance between them. With a dispatch command you either let them be or if they go below a certain distance create a line and get the midpoint, as you suggested. It should work.
I hope this is of some help.

Permalink Reply by Patrick Bedarf on June 11, 2009 at 11:11am

Could you please explain how to find the closest neighbor for each point? I already struggle with this. Your help is much appreciated thx.

a-ngine

Permalink Reply by J.Filigran on June 11, 2009 at 11:45am

There is a component which is named -Closest Point-
Inputs are: the point to search from, and the set of points to run through. If the point you search from is in the same list then you would need to create a new list and exclude that point.

Permalink Reply by Patrick Bedarf on June 12, 2009 at 4:29am

Cheers, I'll try that out and hit you back later. a-ngine

Permalink Reply by Patrick Bedarf on June 12, 2009 at 10:20am

Okay here we go: I used the closest point comp to get the nearest neighbors in a specific point. With the larger-than comp I could feed the boolean information to the dispatch guy to let the midpoint appear or dissapear.

Problems:
1. How to get it working for all points disregarding the closest point related to themselfes? I tried to split the list into (a) the point of interest and (b) all other points to avoid comparison to themself. In my case there are sth like 73 points - how to get it working in lists / boolean patterns? I guess no 73 split-list comps?!

2. If I got my nearest point below the declared distance and the midpoint appeares (image) - how to put all needed points (above the minDist) and generated points (midpoints) back together to geometry??! I think somehow dispatching them again.

I am glad for all kind of help - and I know I have to learn VB/C#...
PS: see the image and definition attached (all you need in rhino is a surface)

Thanks, a-ngine

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