Blackbox Transpose Coordinate Cumulative Distribution Plot

Description

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

Usage

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

Arguments

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.

Value

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

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

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

Examples

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### 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)

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