Attribcreate avoid same value neighbours

[otto]

Hi!

How can I test and avoid that two neighbour points gets same exact attribute value when using random in attribcreate? Here illustrated with a simple setup with ordered grid points as input.

My attribute my_number is rand($PT)*5

loop.hip

[3dome]

try to widen the range of values. now they only go from 0-5 make it big like 0-9999

or try not to use $PT instead use ($PT*4542248.26) [some big random number in there]

[otto]

Thanks for the quick reply 3dome. Unfortunately, I have a limited range of values to choose from in my setup (the screenshots were from an example file), so I can't use that approach.  

[Aizatulin]

Hi,

here is an approach using a foreach and checking each neighbour for each point.

loopX.hipnc

[Aizatulin]

Hi again,

if you want avoid the while loop, which potentially can fail, here is another (similar) way.

loopY.hipnc

[otto]

Thank you so much Aizatulin, this works great! I will put it to good use.

[otto]

Just another question, @Aizatulin. Is it possible to make this setup work on points that are not on a grid, but for instance a set of points that are created from a singe point copied 10x horizontally and 10x vertically (see example file)? I tried using nearpoints instead of neighbours, but I am not sure how to get the point position in this code. Sorry, I am an absolute beginner when it comes to VEX .

loopZ.hipnc

[Aizatulin]

Hi,

damn I missed this answer completely (sorry)

If still interested, here is a modified version working of loopZ.

The neighbour() function can be replaced by the pcfind() function, which is searching all neighbours, which are in a specific radius but not necessarily connected. It can be an idea to use a limit for the maximal neighbour count, which can be 8 for example.

 

loopZ.hipnc

Edited July 31, 2019 by Aizatulin