How to emit particle on White area only?
or
how to do like Maya Texture rate map in emitter?

I find out other way i don't know that is right or wrong but it's working
i using partition split white one group and black one group in source emitter i using white group so it's working,

there is any other way to do this pls let me know ! :roll:

Hi,

Here's an example [sidefx.com].

You can search through the forum with “particle AND color” as your keywords to get more examples.

Cheers!
steven