isolate RGB PP red channel and drived by force attributes from n particles

[mx51]

Hi everyone

This is my first time here and It's my first time dealing with vector.

I would like some help please. Here what I trying to do.

In n particles I want to connect force attributes to RGB PP to display the force inside the particle.

It can be done in node editor and works but I need some extra.

I would like to assigned the force to the R channel only of RGB PP but I can't get the correct expression

for example I tried -> nParticleGenTurbShape.rgbPP = {nParticleGenTurbShape.force, 0, 0}
but I get // Error: Line 0.67: Cannot cast data of type vector[] to vector.

Someone can help me with that. i will have another problem but this is my main issue currently.

Thanks in advance

[hamsterHamster]

Curly brackets {} are for the arrays, while your PP attribute is a vector.. use <<R,G,B>> instead. And then, the .force seems to be an array of several vectors, while the R component you want will be most likely a single float type number.

[mx51]

Thanks for the reply. Yeah that's make sense. Do you have an idea to write this expression  ?

[hamsterHamster]

No, I have no particular idea, because it is unclear what force did you mean; there are many, depending of the dynamics setup, and you want to put them under one float, like compressing Mona Lisa painting to a line. 😄 If I were you, I'd start by learning/printing out what is within that .force array, then decide just one thing which will drive the R channel.