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From | Nick Cox <njcoxstata@gmail.com> |
To | statalist@hsphsun2.harvard.edu |
Subject | Re: st: fitting curves in regplot |
Date | Sat, 25 Jun 2011 20:08:02 +0100 |
Sorry, but I don't understand precisely what your question is. Note that there are several Nicks active on the list. -twoway mspline- is able to mimic straight lines, as a piecewise cubic can be piecewise linear. Consider . set obs 100 obs was 0, now 100 . gen x = _n . gen y = 42 + 32 * x . twoway line y x || mspline y x Nick On Sat, Jun 25, 2011 at 5:54 PM, Arti Pandey <rtpandey@yahoo.com> wrote: > > > > Hello > I am trying to fit curves after regression using glm. I am following Nick's > various online documents, especially the paper "Speaking Stata: Graphing Model > Diagnostics", The Stata Journal,2004, 4 No. 4, Pg 449-475". I am trying to get > the fitted curves to look like those in the paper. Choosing "lowess" for > plottype looks better but regplot doesnt allow us to play with bwidth. > > So my question is to Nick and anyone else who followed that paper, how can > mspline give such a perfect curve there. For example. the curve fit by type > shows perfect linear for one type, would mspline show that. > * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/