boxplot.matrix | R Documentation |

Interpreting the columns (or rows) of a matrix as different groups, draw a boxplot for each.

## S3 method for class 'matrix' boxplot(x, use.cols = TRUE, ...)

`x` |
a numeric matrix. |

`use.cols` |
logical indicating if columns (by default) or rows
( |

`...` |
Further arguments to |

A list as for `boxplot`

.

Martin Maechler, 1995, for S+, then **R** package sfsmisc.

`boxplot.default`

which already works nowadays with
data.frames; `boxplot.formula`

, `plot.factor`

which
work with (the more general concept) of a grouping factor.

## Very similar to the example in ?boxplot mat <- cbind(Uni05 = (1:100)/21, Norm = rnorm(100), T5 = rt(100, df = 5), Gam2 = rgamma(100, shape = 2)) boxplot(mat, main = "boxplot.matrix(...., main = ...)", notch = TRUE, col = 1:4)

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