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Re: Approximating the function from its plot

• To: mathgroup at smc.vnet.net
• Subject: [mg56534] Re: Approximating the function from its plot
• From: AES <siegman at stanford.edu>
• Date: Thu, 28 Apr 2005 02:40:30 -0400 (EDT)
• Organization: Stanford University
• References: <d3o0dm$bn5$1@smc.vnet.net> <d4mv8h$3ds$1@smc.vnet.net>
• Sender: owner-wri-mathgroup at wolfram.com

In article <d4mv8h$3ds$1 at smc.vnet.net>,
 "Frank Iannarilli" <frankeye at cox.net> wrote:

> I think this may be what you're looking for -- courtesy of some
> years-ago poster:
> That is, this trick allows you to employ Plot[] on some function to get
> an adaptively sampled set of points, which you can in turn use in
> FunctionInterpolation[] etc.  You can play with Plot[]'s options to
> increase the sampling density/sampling behavior.

I may have been the person who was being responded to -- not the 
responder -- in this earlier post.

But I also learned at some earlier point that "DownValues" is another 
esoteric command that one can use to do similar kinds of data recovery, 
though in a somewhat different way.