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Re: recommendations for curve fitting [message #54945]

Tue, 24 July 2007 14:52

Vince Hradil
Messages: 574
Registered: December 1999

Senior Member

On Jul 24, 12:55 pm, Josh <joshuamonta...@gmail.com> wrote:
> i'm looking to add a trend- / fit-line to my plotted data, and not
> finding any really nice and easy way to do so. the plot is currently
> being generated with the PLOT command, and I'm not looking for
> anything much more complicated than a quadratic fit (probably even
> just linear). i tried using IPLOT and adding a curve fit there, but
> it didn't work very well and was kind of awkward.
>
> does anyone have any good recommendations for fitting a trendline to a
> scatter plot? as i said, it will probably be as simple as linear /
> quadratic in nature.
>
> thanks.

Try poly_fit() and oplot

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