CHOPs question, multiple channels

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I was wondering how to polyextrude faces of a letterform individually based on multiple CHOPs channels. It is easy to combine channels and then export the data to “ltz” in polyextrude, but I find it difficult, using Andrew Lowell's intro to chops MOV movie method to individually apply the multiple channels to points. It shouldn't be that hard but I must be missing a basic concept. Can anyone help?

Attachments:
extrude_test_letterform_002up.hip (3.4 MB)

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The multiple channels are in the file's Chopnetwork in Math_mult_chan or some name similar to that. I am currently using a Math which combines Channels and combines Chops to produce a single channel of data which I based on a midi file. The data is locked in a Null at the top of the network and the original midi node has been deleted for simplicity.
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I was thinking to use a foreach sop in this problem but I found that foreach only works with Primitive attributes not Point attributes which the Geometry CHOP seems to need in order to get point values into CHOPs, unless someone knows how to get primitive values into CHOPs. Please inform.

Sincerely,
markerline
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This is what I was trying to attempt. However I did it the laborious way by copying and pasting nodes (not through hscript but by hand) and then merging (again by hand) to get a desired result. I used the Geometry CHOP, Attribute Promote, and Fetch and combined CHOPs. If you look into the obj network at SOP level and the CHOP network you will see why I am looking for a more streamlined approach. All those nodes and that was on a poly sphere with a frequency of 1. Imagine if I had to use freq 2 with 80 primitive faces. That would mean 80 nodes to hand copy and paste! Can anyone give me a clue how I could have used something like foreach or a batch process to achieve the same result?

Attachments:
prim_colors_random_chops.hip (191.1 KB)

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