Grasshopper

algorithmic modeling for Rhino

split list by difference in values....

Hi to all of you Grasshopper experts.

I tried to find something related in the Forum but somehow no sucess so far.

How to split a list into multiple (at least three) sublists by a 'big' change of data value.

In this case it will be between position 86 and 87 where the x value of a point jumps from 2.32... to -6.04... (see inside red rectangle @ attached image).

Idea so far is:

1) Decompose the list into x,y,z

2) get just the x values in one list

3) compare all values in a kind loop.

4) if value difference is more that let's say 1.0 - get the index

5) split list at that index.

 

My question: How to do that without looping?

I would be very thankful is someone could give me a hint.

Best, Boris.

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Permalink Reply by Matt Gaydon on January 28, 2016 at 6:11am

Hi Boris,

Firstly I would check to see if there is a point in the code where you have flattened the data thus making these numbers become a single list and work out how to keep them in there tree structure going forward from this point.

If this is not possible, then try this. 

Hope that Helps

Matt

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Permalink Reply by Pieter Segeren on January 28, 2016 at 7:33am

Hi Boris, if you don't mind using a VB component (which does use a loop) you might like this:

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