R: Plotting Paired Comparison Data

plot.paircomp {psychotools} | R Documentation

## Plotting Paired Comparison Data

### Description

Plotting the frequency table from `"paircomp"` data.

### Usage

      ## S3 method for class 'paircomp'
    plot(x, off = 0.05,
      xlab = "Proportion of comparisons", ylab = "", tol.xlab = 0.05,
      abbreviate = TRUE, hue = NULL, chroma = 40, luminance = 80,
      xlim = c(0, 1), ylim = NULL, xaxs = "i", yaxs = "i", ...)

### Arguments

`x` | an object of class `"paircomp"`.
`off` | numeric. Offset between segments on the y-axis.
`xlab, ylab` | character. Axis labels.
`tol.xlab` | numeric. convenience tolerance parameter for x-axis annotation. If the distance between two labels drops under this threshold, they are plotted equidistantly.
`abbreviate` | logical or integer. Should object labels be abbreviated? Alternative an integer with the desired abbreviation length. The default is some heuristic based on the length of the labels.
`hue` | numeric. A vector of hues in [0, 360], recycled to the number of objects compared in `x`. A sequential palette is computed for each hue, see below.
`chroma` | numeric. Maximum chroma in the palette.
`luminance` | numeric. Minimum (and maximum) luminance in the palette. If omitted, the maximum is set to 95.
`xlim, ylim, xaxs, yaxs, ...` | graphical arguments passed to `plot`.

### Details

The `plot` method creates a frequency table (using `summary`) and visualizes this using a sort of spine plot with HCL-based diverging palettes. See Zeileis, Hornik, Murrell (2009) for the underlying ideas.

### References

Zeileis A., Hornik K. and Murrell P. (2009), Escaping RGBland: Selecting Colors for Statistical Graphics. Computational Statistics & Data Analysis, 53, 3259-3270. doi:10.1016/j.csda.2008.11.033 Preprint available from http://statmath.wu.ac.at/~zeileis/papers/Zeileis+Hornik+Murrell-2009.pdf.

### See Also

`paircomp`

### Examples

    data("GermanParties2009", package = "psychotools")
    par(mar = c(5, 6, 3, 6))
    plot(GermanParties2009$preference, abbreviate = FALSE)

[Package psychotools version 0.4-2 Index]