multicomp.reverse

From HH v3.1-8 by Richard Heiberger

Force all comparisons in a "multicomp" object to have the same sign.

Force all comparisons in a "multicomp" object to have the same sign. If the contrast "A-B" has a negative estimate, reverse it show the contrast "B-A" with a positive estimate. If a contrast name does not include a minus sign "-" and the contrast is reversed, then an informative message is printed.

Keywords: dplot

Usage

multicomp.reverse(y, estimate.sign = 1, ...)

Arguments

y: "multicomp" object
estimate.sign: If estimate.sign==1, reverse the negatives. If estimate.sign==-1, reverse the positives. Both the names of the comparisons and the numerical values are reversed. If estimate.sign==0, return the argument.
...: other arguments not used.

Value

The result is a "multicomp" object containing the same contrasts as the argument but with the sign of the contrasts changed as needed.

Note

S-Plus use the multicomp functions and R uses the multcomp package.

References

Heiberger, Richard M. and Holland, Burt (2004b). Statistical Analysis and Data Display: An Intermediate Course with Examples in S-Plus, R, and SAS. Springer Texts in Statistics. Springer. ISBN 0-387-40270-5.

Heiberger, Richard M. and Holland, Burt (2006). "Mean--mean multiple comparison displays for families of linear contrasts." Journal of Computational and Graphical Statistics, 15:937--955.

Examples

## see example in multicomp.order

Documentation reproduced from package HH, version 3.1-8, License: GPL (>= 2)

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