[Octave-bug-tracker] [bug #50466] hgtransform function missing

[Bob Stephens]

Follow-up Comment #3, bug #50466 (project octave):

I've attached my working files. After doing so I remembered that the version
of makehgtform.m that I have so far relies on the robotics toolbox I mentioned
earlier so may not make much sense at this point. It creates a 4*4
transformation matrix based on the type passed in.

hgtransform is doing some of what I want but I think I have a notable logic
failure in the actual application of the transformation matrix. The parts of
the surfaces which make up the group change shape (and size when I include the
scale transform) but not in the way I'm expecting. 

There is a test structure to drive it based on code snippets for using
hgtransform eg (http://matlab.izmiran.ru/help/techdoc/ref/hgtransform.html).

Posting in case this of interest to others either for their own use or for
guiding a learner.

I'm using padarray in the listener because I've not yet worked out how to
append rows to the bottom of the matrix.

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