Finding max and min value of an attribute in VOPPOPs.

[Symbolic]

Hi,

I have a vector attribute inside a POP network that goes into VOPPOPs.

ex:

val: {1.619553,0.423548,-21.839031}

val: {1.608211,0.420283,-21.810768}

val: {1.603649,0.420570,-21.822512}

val: {1.606146,0.420864,-21.819849}

I can isolate the Y component.

val: 0.422827

val: 0.423548

val: 0.420283

val: 0.420570

val: 0.420864

then I need to find the lowest value and use it in the rest of the VOPPOP network. So I get:

val: 0.420283

val: 0.420283

val: 0.420283

val: 0.420283

val: 0.420283

per particle.

It sounds easy, I mean you can do that kind of stuff with an Attribute Promote (Max / Min) at SOP level. But I could not find a way to do it inside VOPPOPs.

Any ideas? Thanks.

[brianburke]

Yo dude. You'll want to use a for loop in a VOP POP to test the values of all of the particles in your system. You can set the end value to be Npt, and inside the loop use an Import Attribute VOP to get your attribute. You can then test this value against min and max values, returning the value of the current point or the previous point depending on the results of the test.

Good luck dude.

[Symbolic]

Hi brian,

Thanks. Will this work with dynamic values? Like: I do not want to set a min value manually. I want to be able to calculate the min value amongst all values. I will be rally happy if somebosy shares an example.

Cheers.

[eetu]

The way described above isn't that complicated really, you just need to grok the for-loop. (see attachment)

I don't quite like it, though - it needlessly goes through all the points per each point (O^2).

Any VOP ideas on how to do the loop only once?

eetu.

ee_voppop_minmax.hip