plot.aldmck_negative: Aldrich-McKelvey Negative Coordinate Distribution Plot
In basicspace: Recovering a Basic Space from Issue Scales

Description Usage Arguments Value Author(s) See Also Examples

plot.aldmck_negative reads an aldmck object and plots the probability distribution of the respondents and stimuli with negative weights.

1 2	## S3 method for class 'aldmck_negative' plot(x, xlim=c(-2,2), ...)

`x`	an `aldmck` output object.
`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`.

A plot of the probability distribution of the respondent ideal points, along with the locations of the stimuli. If no negative weights exist, either because respondent self-placements are not specified, or because all weights are positive, a plot indicating this in text is given.

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

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

### 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)
plot.aldmck_negative(result,xlim=c(-1.5,1.5))