It turns out that Python can return the feetDistance and hipHeight for a figure.  The attached script will print out these values, and the thighLength, for the currently selected figure.

The values don't match those in the old P4 walk cycle poses, however, which is frustrating.  I think I recall a lot of fuss at one point about the length of the PNU having changed.  Possibly that's what's reflected here.

These are the values I get for Antonia and Posette, using the script:

AntoniaA
hipHeight 0.381689
feetDistance 0.079002
thighLength 0.173937

Posette
hipHeight 0.396901
feetDistance 0.043000
thighLength 0.203177

The thighLength value is the distance between the Origin and EndPoint of the Thigh actor, which makes sense.

 

Note, however, that if we're converting the pose using the pose mixing script, the feetDistance value for the original figure from which the pose was saved should be used.  A more accurate value can be derived with Python by getting the bounding boxes for the worldspace geometry of one of the feet and doubling the distance of the inner box boundary from the world origin.

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Cage can be an opinionated jerk who posts without thinking.  He apologizes for this.  He's honestly not trying to be a turkeyhead.

Cage had some freebies, compatible with Poser 11 and below.  His Python scripts were saved at archive.org, along with the rest of the Morphography site, where they were hosted.