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\name{assocplot}
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\name{assocplot}
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\alias{assocplot}
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\alias{assocplot}
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\encoding{latin1}
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\title{Association Plots}
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\title{Association Plots}
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\description{
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\description{
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  Produce a Cohen-Friendly association plot indicating deviations from
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  Produce a Cohen-Friendly association plot indicating deviations from
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  independence of rows and columns in a 2-dimensional contingency
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  independence of rows and columns in a 2-dimensional contingency
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  table.
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  table.
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  of a cell is greater than the expected one, the box rises above the
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  of a cell is greater than the expected one, the box rises above the
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  baseline and is shaded in the color specified by the first element of
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  baseline and is shaded in the color specified by the first element of
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  \code{col}, which defaults to black; otherwise, the box falls below
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  \code{col}, which defaults to black; otherwise, the box falls below
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  the baseline and is shaded in the color specified by the second
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  the baseline and is shaded in the color specified by the second
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  element of \code{col}, which defaults to red.
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  element of \code{col}, which defaults to red.
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  A more flexible and extensible implementation of association plots
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  written in the grid graphics system is provided in the function
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  \code{\link[vcd]{assoc}} in the contributed package \pkg{vcd} (Meyer,
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  Zeileis and Hornik, 2005).
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}
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}
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\seealso{
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\seealso{
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  \code{\link{mosaicplot}}; \code{\link{chisq.test}}.
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  \code{\link{mosaicplot}}, \code{\link{chisq.test}}.
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}
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}
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\references{
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\references{
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  Cohen, A. (1980),
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  Cohen, A. (1980),
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  On the graphical display of the significant components in a two-way
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  On the graphical display of the significant components in a two-way
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  contingency table.
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  contingency table.
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  Friendly, M. (1992),
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  Friendly, M. (1992),
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  Graphical methods for categorical data.
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  Graphical methods for categorical data.
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  \emph{SAS User Group International Conference Proceedings}, \bold{17},
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  \emph{SAS User Group International Conference Proceedings}, \bold{17},
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  190--200.
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  190--200.
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  \url{http://www.math.yorku.ca/SCS/sugi/sugi17-paper.html}
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  \url{http://www.math.yorku.ca/SCS/sugi/sugi17-paper.html}
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  Meyer, D., Zeileis, A., and Hornik, K. (2005)
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  The strucplot framework: Visualizing multi-way contingency tables with vcd.
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  \emph{Report 22}, Department of Statistics and Mathematics,
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  \enc{Wirtschaftsuniversität}{Wirtschaftsuniversitaet} Wien, Research Report Series.
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  \url{http://epub.wu-wien.ac.at/dyn/openURL?id=oai:epub.wu-wien.ac.at:epub-wu-01_8a1}
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}
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}
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\examples{
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\examples{
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## Aggregate over sex:
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## Aggregate over sex:
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x <- margin.table(HairEyeColor, c(1, 2))
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x <- margin.table(HairEyeColor, c(1, 2))
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x
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x