Hi,

I haven't used houdini for a while and must be forgetting something. I'm trying to visualize a sound wave with boxes of different heights. I have a line SOP for a template. A copy SOP with the PT stamped as “test” and finally a box SOP with “chopf(”/ch/ch1/math3/chan1“, test)” in sizex. Unfortuantly its using the same chan1 value for all of the boxes instead of collecting new data for each frame. Any ideas?

Thanks
Henster

check Sample Settings in the common tab?

Hi tallkien,

Thanks for the reply. I should ahve updated the post. My expression syntax was wrong. Instead of chopf(“/ch/ch1/math3/chan1”, test) it should have been chopf(“/ch/ch1/math3/chan1”, (param(“test”, 1))).

Henster