On Sun, Nov 18, 2012 at 10:55 AM, Carmen Blanco <blnco.mc@gmail.com> wrote:
> I have a scatter plot.
>
> I want to fit in the graph by an exponential curve.
>
> For example, to a linear function I use -lfit- command and I need to
> know how to do the adjustment with the exponential function.
I don't think there's a direct way to do it with a plot function. You
could fit an exponential model with nonlinear least squares (-nl-) or
a generalized linear model (-glm-), create predicted values, and then
use a connected line plot or some other interpolating function. I
haven't used the fractional polynomial interpolating fits so I don't
know enough about them to comment but if you just want a good smooth
curve interpolator, that may work too.
Jay
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