# plot.paircomp

##### Plotting Paired Comparison Data

Plotting the frequency table from `"paircomp"`

data.

- Keywords
- classes

##### Usage

```
# S3 method for 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

##### Examples

```
# NOT RUN {
data("GermanParties2009", package = "psychotools")
par(mar = c(5, 6, 3, 6))
plot(GermanParties2009$preference, abbreviate = FALSE)
# }
```

*Documentation reproduced from package psychotools, version 0.5-1, License: GPL-2 | GPL-3*