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help for racplot
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Plot residual autocorrelation function 

        racplot [ , residualtype rscale(exp) ac_options plot(plot) ]


Description

    racplot plots the autocorrelation function of residuals from the last
    model. Data must have been tsset previously.

    More precisely, the default is whatever residuals predict, residuals (or,
    after glm, predict, response) produces after a model. The plot is
    restricted to the estimation sample.


Options

    residualtype specifies a type of residual other than the default.  The
        following types are currently supported: anscombe, deviance,
        likelihood, pearson, residuals, response, rstandard, rstudent, score,
        working.

    rscale(exp) specifies a transformed scale for the residuals using Stata
        syntax and X as a placeholder for the residual variable name. Thus
        rscale(X^2) specifies squaring; rscale(abs(X)) specifies absolute
        value, to set aside sign; rscale(sqrt(abs(X))) specifies root of
        absolute value. This option is not obviously helpful, but is included
        just in case it may be.

    ac_options are options of ac.

    plot(plot) provides a way to add other plots to the generated graph; see 
        plot_option.


Examples

    . tsset time
    . regress whatever time
    . racplot


Author

    Nicholas J. Cox, University of Durham, U.K.
    n.j.cox@durham.ac.uk


Also see