These are enhancements of the Rcmdr
Xyplot function (which I
wrote) to include layout parameters and plot type, to force solid dots, and to
between conditioning variables in the formula and group variables.
Xyplot.HH is an interface to the
Xyplot.HH2 is an interface to many of the
dotplot) and to the formula method for
likert in the
panel.barchart is selected, then the argument
automatically set. When
panel.barchart, the user must manually
specify the limits (
ylim) to include zero for the effect of
Richard M. Heiberger <email@example.com>
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