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Re: Re: st: Frapoly

From   Maarten buis <>
Subject   Re: Re: st: Frapoly
Date   Mon, 11 Feb 2008 20:58:04 +0000 (GMT)

--- mai mai <> wrote:
> I am running fracpoly for a large number of regressions. Is there a
> way to automate the process of finding (or plotting) the inflection
> points? ie, is there a way to solve for the derivative of each
> function considering that each function has a different functional
> form from the others? Or do I have to manually solve for the dydx for
> each function then manually solve for them to be zero?

It is a pretty regular problem, so it should not be too hard to program
this. However, I am in the process of finishing my dissertation, so I
am not going to do so in the forseeable future. So, unless someone else
on this list wants to take a stab at this, you will have to write that
program. As I said it should not be that hard, though I don't know if
writing that program will turn out to be quicker than doing it


Maarten L. Buis
Department of Social Research Methodology
Vrije Universiteit Amsterdam
Boelelaan 1081
1081 HV Amsterdam
The Netherlands

visiting address:
Buitenveldertselaan 3 (Metropolitan), room Z434

+31 20 5986715

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