summary.blackbt: Blackbox-Transpose Summary
In basicspace: Recovering a Basic Space from Issue Scales

Description Usage Arguments Value Author(s) See Also Examples

summary.blackbt reads an blackbt object and prints a summary.

1 2	## S3 method for class 'blackbt' summary(object, ...)

`object`	a `blackbt` output object.
`...`	further arguments to `print`.

A summary of a blackbt object. For each dimension, reports all stimuli with coordinates, individuals used for scaling, and fit. Also summarizes number of rows, columns, total data entries, number of missing entries, percent missing data, and sum of squares.

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', 'plotcdf.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)