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Hello I have a problem, using an alembic file to control clouds or pyro. The points where animated in Softimage, exported as alembic, imported to Houdini and now I want create a cloudy storm with the velocity and Pointposition of these points. I already tried some of the example files I found here and on the cgwiki page... with a normap popnetwork it works, but I just dont get it to run with my alembic file. Since there are many ways, I thought about converting the points to VDB, use the VDB to controll volume like pyro and clouds. One point I dont understand and dont know how to solve: does my .abc file have velocity information? When I hover with middle mouse, it tells me, there is 'v'. But Using the vel is not working. Another question is: Since I would like to slowly switch from SI to Houdini - how would I do a setup like these in Houdini? In Softimage I used the tangent of a curve to move the points circular. After that a gravity node with + values to push the points up in the are. And a distance between emitter a point position to controll speed and gravity strength. How would a setup like that look in Houdini? Thank you very much! marc0s edit: the example.zip is an alembic file with some frames of my setup, just if you wonder. example.zip storm.mp4