UsingR: squareplot – R documentation

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squareplot

Create a squareplot alternative to a segmented barplot

Description

Create a squareplot as an alternative to a segmented barplot. Useful when the viewer is interested in exact counts in the categories. A squareplot is often used by the New York Times. A grid of squares is presented with each color representing a different category. The colors appear contiguously reading top to bottom, left to right. The colors segment the graph as a segmented bargraph, but the squares allow an interested reader to easily tally the counts.

Usage

squareplot(x, col = gray(seq(0.5, 1, length = length(x))),
border =NULL, nrows = ceiling(sqrt(sum(x))), ncols =
ceiling(sum(x)/nrows),
...)

Arguments

`x`	a vector of counts
`col`	a vector of colors
`border`	border color passed to `polygon`
`nrows`	number of rows
`ncols`	number of columns
`...`	passed to `title`

Value

Creates the graph, but has no return value.

Author(s)

John Verzani

References

The New York Times, www.nytimes.com. In particular, Sports page 6, June 15, 2003.

Examples

## A Roger Clemens Cy Young year -- roids?
squareplot(c(21,7,6),col=c("blue","green","white"))

UsingR

Data Sets, Etc. for the Text "Using R for Introductory Statistics", Second Edition

v2.0-6

GPL (>= 2)

Authors

John Verzani <verzani@math.csi.cuny.edu>

Initial release