Re: RationalApproximation
- To: mathgroup at smc.vnet.net
- Subject: [mg55031] Re: [mg55003] RationalApproximation
- From: DrBob <drbob at bigfoot.com>
- Date: Thu, 10 Mar 2005 05:24:33 -0500 (EST)
- References: <A4628A7C27BF0D48847FD4AB8536731D4E5015@blinky.mobile-mind.com>
- Reply-to: drbob at bigfoot.com
- Sender: owner-wri-mathgroup at wolfram.com
It's pretty clear those points aren't available, except (possibly) by solving for the zeroes of the error. Bobby On Wed, 9 Mar 2005 10:01:30 -0500, Scott Guthery <sguthery at mobile-mind.com> wrote: > My bad. RationalInterpolation[]. The docs say: > > "There are two ways of using RationalInterpolation. If you just specify > a range in the independent variable, then the set of values is chosen > automatically in a way that ensures a reasonable approximation for the > degree of approximation you have chosen." > > The question is what is the set of values was chosen automatically. > > Cheers, Scott > > -----Original Message----- > From: DrBob [mailto:drbob at bigfoot.com] To: mathgroup at smc.vnet.net > Sent: Wednesday, March 09, 2005 9:43 AM > To: Scott Guthery; mathgroup at smc.vnet.net > Subject: [mg55031] Re: [mg55003] RationalApproximation > > I find no such function in Help for version 5.1.1, and no match for it > at WRI's documentation center. If searches like this always worked (but > they don't), that would mean there is no such function. You may have to > tell us what package the function comes from, before we can find any > clues on it. > > The Calculus`Pade` package has EconomizedRationalApproximation and > NumericalMath`Approximations` has a similar function called > RationalInterpolation, but I see no sign that either of them "ends up > using" any set of points at all. > > Bobby > > On Wed, 9 Mar 2005 06:34:28 -0500 (EST), Scott Guthery > <sguthery at mobile-mind.com> wrote: > >> Is there any way to get RationalApproximation n automatic mode to give > you back the set of points that it ended up using? >> Thanks for any insight. >> Cheers, Scott >> >> >> >> > > > > -- > DrBob at bigfoot.com > > > > > > -- DrBob at bigfoot.com