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From |
"Martin Weiss" <martin.weiss1@gmx.de> |

To |
<statalist@hsphsun2.harvard.edu> |

Subject |
st: AW: Plotting graph for a cubic regression model |

Date |
Tue, 20 Apr 2010 11:47:00 +0200 |

<> Your code continues to work in Stata 11, though use of -adjust- is now deprecated. There have been discussions about the claim "margins can do everything that adjust did and more." (see -help adjust- in Stata 11 incarnation) on the list before (think http://www.stata.com/statalist/archive/2009-11/msg00167.html). The first part of your code would be **** sysuse auto, clear qui reg price c.mpg##c.mpg weight **** The equivalent -margins- call to your -adjust- code should be -margins, at((mean) weight)- from my point of view, but how one can -generate- the variables using -margins- that -adjust- could continues to elude me... (I do not see a -generate- option, for a start...) HTH Martin -----Ursprüngliche Nachricht----- Von: owner-statalist@hsphsun2.harvard.edu [mailto:owner-statalist@hsphsun2.harvard.edu] Im Auftrag von Sebastian van Baal Gesendet: Dienstag, 20. April 2010 10:44 An: statalist@hsphsun2.harvard.edu Betreff: st: Plotting graph for a cubic regression model Dear Stata Users: I have a question concerning an old threat (please see below). It offers a solution to the problem of plotting the partial effect of a predictor in a quadratic regression model. My aim is to do the same for a cubic regression model and the solution offered below works fine. However, since this threat is rather old and since "adjust" seems to be out-of-use, I wonder if there is an easier of "better" way to do it. Any suggestions? Thanks in advance Sebastian ******************************************** >From smerryman@kc.rr.com To statalist@hsphsun2.harvard.edu Subject Re: st: Plotting graph for a quadratic regression model Date Wed, 23 Mar 2005 06:25:53 -0600 How about something like this: . sysuse auto (1978 Automobile Data) . gen mpg2 = mpg^2 . qui reg price mpg mpg2 weight . qui adjust weight, gen(predicted) . twoway line predicted mpg, sort || scatter price mpg Scott ----- Original Message ----- From: Luigi Curini <luigi.curini@unimi.it> Date: Wednesday, March 23, 2005 5:35 am Subject: st: Plotting graph for a quadratic regression model > Dear all, > > I have a question about the graph options of Stata. I have a quadratic > regression model, and I want to graphs the estimated regression > functionsrelating the DV and the IV of my interest for the > quadratic specification, > along with a scatterplot of the data. In other words, my graph > should show > the predicted value of the DV as a funcion of the IV of interest, > holdingfixed other values of the IV in the regression at their > sample averages. > Using a normal mathematical software (I'm using MAPLE) I'm able to > plot my > quadratic curve, but I'm not able to superimpose into the graph > the points > of all my observations. Is it possible to get this graph using STATA8? > > I'd be really greatful for any help, > Best regards, > Luigi Curini ******************************************** * * 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/ * * 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/

**References**:**st: Plotting graph for a cubic regression model***From:*"Sebastian van Baal" <s.vanbaal@arcor.de>

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