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From | Nick Cox <n.j.cox@durham.ac.uk> |
To | "'statalist@hsphsun2.harvard.edu'" <statalist@hsphsun2.harvard.edu> |
Subject | st: RE: panel data analysis - avplots |
Date | Fri, 27 Aug 2010 09:57:54 +0100 |
Most such diagnostic plot commands for use after model fitting that are part of official Stata [NB spelling] do indeed presume prior use of -regress- (or -anova-). Some less restrictive commands are included in SJ-10-1 gr0009_1 . . . . Software update for model diagnostic graph commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . N. J. Cox (help anovaplot, indexplot, modeldiag, ofrtplot, ovfplot, qfrplot, racplot, rdplot, regplot, rhetplot, rvfplot2, rvlrplot, rvpplot2 if installed) Q1/10 SJ 10(1):164 provides new command rbinplot for plotting means or medians of residuals by bins; provides new options for smoothing using restricted cubic splines; updates anova examples SJ-4-4 gr0009 . . . . . . . . . . Speaking Stata: Graphing model diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . N. J. Cox (help anovaplot, indexplot, modeldiag, ofrtplot, ovfplot, qfrplot, racplot, rdplot, regplot, rhetplot, rvfplot2, rvlrplot, rvpplot2 if installed) Q4/04 SJ 4(4):449--475 plotting diagnostic information calculated from residuals and fitted values from regression models with continuous responses but that package does not include an added variable plot commmand. More positively, the main trick is to look carefully at the -postestimation- help. Very often a diagnostic plot that you want is just a standard -twoway- command applied to some variant of the predictions, residuals, etc. Nick n.j.cox@durham.ac.uk David Tandberg I am using the xtreg command for analyzing panel data. I want to develop avplots in order to graphically show the impact of various independent variables holding the other independent variables constant. However STATA is returning an error: "last estimates not found". However, when I drop the xt and only use the reg command it will produce my desired avplots. I have searched on-line and cannot find any help. Is there an option for producing avplots when conducting panel data analysis using the xt command or some other solution I am not aware of? * * 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/