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How does one get data out of a TemporalData object?

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• Subject: [mg131176] How does one get data out of a TemporalData object?
• From: Joe Gwinn <joegwinn at comcast.net>
• Date: Sat, 15 Jun 2013 04:25:28 -0400 (EDT)
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I would like to generate some random signals for use in exploring
signal-processing algorithms.

For use as synthetic signals for the algorithm to chew upon, I'd like
to use ContinuousMarkovProcess and TelegraphProcess with
RandomFunction.  With these, I can do statistics and plot things
freely.  

What I cannot quite get is a time series ready for such indignities as
Fourier[].

Now I can manually disassemble the data structure, but I don't find a
list of equispaced samples, I get a transition list, which is not the
same thing.

Interpolation[Normal[temporal data object] // First, InterpolationOrder
-> 0] almost works, but the fine details are smeared over, even though
InterpolationOrder -> 0 works in ListLinePlot et al without apparent
smearing.

What am I missing?  It seems like Probability and Statistics has become
a walled city within Mathematica.  I'm hoping to find a door in the wall,
rather than be forced to build by own little city one brick at a time.

Joe Gwinn

• Follow-Ups:
  • Re: How does one get data out of a TemporalData object?
    • From: Andy Ross <andyr@wolfram.com>