plotcdf.blackbt: Blackbox Transpose Coordinate Cumulative Distribution Plot
In basicspace: Recovering a Basic Space from Issue Scales

Description Usage Arguments Value Author(s) See Also Examples

plotcdf.blackbt reads an blackbt object and plots the cumulative distribution of the respondents and stimuli.

1	plotcdf.blackbt(x, align=NULL, xlim=c(-1.2,1), ...)

`x`	an `blackbt` 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`.

A plot of the empirical cumulative distribution of the respondent ideal points, along with the locations of the stimuli.

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

'blackbox_transpose', 'LC1980', 'plot.blackbt', 'summary.blackbt', 'LC1980_bbt'.

### Loads and scales the Liberal-Conservative scales from the 1980 NES.
data(LC1980)
LCdat=LC1980[,-1]	#Dump the column of self-placements

### This command conducts estimates, which we instead load using data()

#LC1980_bbt <- blackbox_transpose(LCdat,missing=c(0,8,9),dims=3,minscale=5,verbose=TRUE)
data(LC1980_bbt)

plot(LC1980_bbt)
par(ask=TRUE)
plotcdf.blackbt(LC1980_bbt)
summary(LC1980_bbt)