Forums Technical Discussion Blast "percentage" of points?

Blast "percentage" of points?

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Adriano
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I'm using a sort node to blast a certain amount of points in my geo and i'd like to turn that into a “percentage of points” expression directly into the blast node. The end purpose here is to throw this few nodes into a for each loop to repeat that action several times and let the percentage gradually decrease the amount of points being "peaked and duplicated. Any idea how to write that tiny bit of vex please? I tried with some rand($PT variations but it doesn't seem to pick up in the blast node.

Cheers,

A.
Edited by Adriano - Sept. 26, 2018 21:07:41

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SelectPercentage.JPG (204.7 KB)

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mestela
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a wrangle is probably easier:

 if (rand(@ptnum) < ch('cutoff') ){
   removepoint(0,@ptnum);
 }

otherwise your techniques should work, attached an example:

Attachments:
percent_delete.hipnc (74.0 KB)

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Adriano
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Joined: June 2015
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mestela
a wrangle is probably easier:

 if (rand(@ptnum) < ch('cutoff') ){
   removepoint(0,@ptnum);
 }

otherwise your techniques should work, attached an example:

Thanks a Lot, Matt. That did it.

Cheers,

A.

Attachments:
percent_delete_01.hiplc (114.1 KB)

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