I'm interested in saving custom scene specific data with each scene file. In Maya I can do this by saving attributes to the renderGlobals node… in 3dsMax there is a rootNode that I can save information in. Does Houdini have a similar mechanism?

Thanks,
Andrew

You could save things as user data on the root node in Houdini.
hou.node(“/”).setUserData(“foo”, “bar”)

Thanks… i think that's exactly what I was looking for.

Cheers,
Andrew

Or save data to hou.session module

hou.session isn't useful in this case since I believe he's talking about saving data that will persist with the hip file and not just for the current session.

Graham, you are correct, but it's good to know there is a place for session storage as well. Thanks…

Apologies for reviving this old thread but I'm after something very similar, that is being able to keep a list of hou.NetworkMovableItem references that persist across Houdini sessions.

I can imagine implementing this in 2 ways but both have their issues:
- add a user data on the root node / that lists all the items. Alas, the only unique identifier available for these items is through the hou.NetworkMovableItem.sessionId method, which does not persist across sessions.
- add some sort of user data to each node so that I can find them by scanning the scene, alas the `hou.NetworkMovableItem` class doesn't allow storing user data.

Am I missing something?