I have a file on disk that represents an animated transform with a 4x4 matrices. What is the best way to drive the transform of an object node in houdini?

My existing experience tells me I can create an expression to put into each of the transform parameters…
filexform(“filename”, $T, “TX”)

Is there a more direct way to do this without cracking the matrix into each component? It seems like there could be a way to drive the “pre-transform” on each object node?

Take a look at the HOM Cookbook in the help. There is an example of using a custom Python Object operator that reads in transforms from disk.

http://localhost:48626/hom/cookbook/xforms_from_disk/ [localhost]

When trying to load xforms_from_disk.hip into Houdini 11.0.775, I'm getting errors from the ‘xforms_from_disk’ node (see attached pic).

I then tried to install the PythonObjects.otl from D:\Houdini 11.0.775\houdini\help\hom\cookbook\xforms_from_disk and get “Couldn't add library …. check that PythonObjects.otl is valid operator type library.

So I then created a new OTL, and tried pasting in the code from _index.txt

The code comments indicated that part of the code is for the ”Code for Python Object:“ and another part for the ”PythonModule section“

In the OTL editor, I see tabs for ”Code“, ”Scripts“, and ”Extra Files".

What goes where ?

Mike