ForEach Sop Applied to Points

[bird]

Hi guys,

When I check "apply to points" parm on in the ForEach Sop with "Each Attribute Value" chosen, I see some points swap their point numbers to each other.

Of course this doesn't happen if I write point attribute value as "$PT" in the AttributeCreate Sop. But even when I change the attribute value to "rand($PT*324)", the order of point numbers don't seem to follow the attribute values. Just wonder why the swapping occurs when I use the "apply to points" parameter.

Thanks in advance, hope see some threads

Sewang

[wick3dParticle]

Hey Sewang,

I believe the reason your point numbers are swapping is due to the tolerance value in your for each node. The random value you generate returns an attribute value that varies between 0-1. If some of those values don't satisfy the threshold, then they aren't considered unique values. Try lowering the threshold to '0'.

Best,

~Ilan

[bird]

Thanks so much Ilan,

I tried that out and the swapping didn't happen anymore. Still, I see the swapping with a specific attribute value, for example "rand($PT*23.5)".

But thanks again. Your suggestion can be the perfect solution.