HI
I am a student learning Houdini and renderman.
How can I use variables from other object to control a rman shader's attribute?

I tried
RIBshader “noiseShader” “noisefreq” “noiseoffset”
but it does not work. Can someone pls correct my mistake?

thanks!

You must use an expression to grab the value of the channel - the local variable $TX are only available inside certain of certain SOPs and it still doesn't mean what you're thinking it means.

You really want to do this instead:

`ch(“/obj/fog1/tx”)`
- instead of
/obj/fog1/$TX

Thanks jason!
It works!