plot.cdf {basicspace}

R Documentation

Aldrich-McKelvey Coordinate Cumulative Distribution Plot

Description

plot.aldmck reads an aldmck object and plots the cumulative distribution of the respondents and stimuli.

Usage

## S3 method for class 'cdf'
plot(x, align=NULL, xlim=c(-2,2), ...)

Arguments

x	an aldmck output object.
align	integer, the x-axis location that stimuli names should be aligned to If set to NULL, it will attempt to guess a location.
xlim	vector of length 2, fed to the plot function as the xlim argument, which sets the minimum and maximum range of the x-axis.
...	other arguments to plot.

Value

A plot of the empirical cumulative distribution of the respondent ideal points, along with the locations of the stimuli. If no self-placements were specified during estimation, no graphical plots will appear.

Author(s)

Keith Poole ktpoole@uga.edu

Howard Rosenthal hr31@nyu.edu

Jeffrey Lewis jblewis@ucla.edu

James Lo lojames@usc.edu

Royce Carroll rcarroll@rice.edu

See Also

'aldmck', 'LC1980', 'summary.aldmck', 'plot.aldmck'.

Examples

### Loads and scales the Liberal-Conservative scales from the 1980 NES.
data(LC1980)
result <- aldmck(data=LC1980, polarity=2, respondent=1, missing=c(0,8,9),verbose=TRUE)

summary(result)
par(ask=TRUE)
plot.AM(result,xlim=c(-1.5,1.5))
plot.cdf(result)

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