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From |
"JVerkuilen (Gmail)" <jvverkuilen@gmail.com> |

To |
statalist@hsphsun2.harvard.edu |

Subject |
Re: st: fit an exponential function |

Date |
Sun, 18 Nov 2012 11:26:29 -0500 |

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 * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/faqs/resources/statalist-faq/ * http://www.ats.ucla.edu/stat/stata/

**Follow-Ups**:**Re: st: fit an exponential function***From:*Carmen Blanco <blnco.mc@gmail.com>

**References**:**st: fit an exponential function***From:*Carmen Blanco <blnco.mc@gmail.com>

**Re: st: fit an exponential function***From:*"JVerkuilen (Gmail)" <jvverkuilen@gmail.com>

**Re: st: fit an exponential function***From:*Carmen Blanco <blnco.mc@gmail.com>

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