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\seealso{
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\seealso{
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  \code{\link{apply}} on which \code{sweep} used to be based;
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  \code{\link{apply}} on which \code{sweep} used to be based;
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  \code{\link{scale}} for centering and scaling.
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  \code{\link{scale}} for centering and scaling.
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}
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}
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\examples{
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\examples{
- 
 
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require(stats) # for median
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data(attitude)
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data(attitude)
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med.att <- apply(attitude, 2, median)
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med.att <- apply(attitude, 2, median)
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sweep(data.matrix(attitude), 2, med.att)# subtract the column medians
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sweep(data.matrix(attitude), 2, med.att)# subtract the column medians
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}
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}
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\keyword{array}
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\keyword{array}