(r1) StripchartOverlaidWithBoxplot < Main < Vanderbilt Biostatistics Wiki

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x <- read.table("samplefile.txt", header=TRUE) # see the "samplefile.txt" file above with(x, stripchart(age ~ race, vertical=TRUE, method="jitter", pch=19, jitter=0.3, col="gray")) with(x, boxplot(age ~ race, add=TRUE, varwidth=TRUE, notch=TRUE)) # use the "add = TRUE" argument of the boxplot() function to force the # boxplot() function (usually a high-level plotting command) to act as a # low-level plotting command - i.e., to add the boxplot on top of the stripchart # You can add more to the plot using additional arguments - such as the labels.

Topic revision: r1 - 01 Dec 2005, SvetlanaEden

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