purge a data tree

hi there,

i'm looking for an command in grasshopper that cleans double data in a tree

similar to the purge command in autocad

anybody any ideas?

thanx

Replies to This Discussion

Permalink Reply by David Rutten on January 8, 2010 at 8:20am

What kind of data?

--
David Rutten
david@mcneel.com
Poprad, Slovakia

Permalink Reply by Matthias Eckert on January 8, 2010 at 8:29am

two branches, every branch has 3 points .. but some points are the same... so I want to erase the double data

or:

how can I clean overlapping lines?

Permalink Reply by David Rutten on January 8, 2010 at 10:46am

Hi Matthias,

it's easy enough to filter similar/identical numbers, strings, points, vectors, lines, circles and arcs, but it's a lot harder for freeform curves, surfaces, breps and meshes, as they can be topologically very different while still having the same shape.

I'll have a look at filtering those simple types of data. Should be able to supply some useful components for this.

The current approach to filtering duplicates usually involves sorting the data, then shifting it one index, then comparing those two lists, and cull items from the first list if the 'distance' between A and A' is small enough.

--
David Rutten
david@mcneel.com
Poprad, Slovakia

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