screeplot {CCTpack}

Generate a scree plot

Description

Screeplot method for CCTpack data, or a cctfit object of class 'cct'; equivalent to function cctscree().

Usage

screeplot(x, ...)

Arguments

x

a 2-dimensional matrix or dataframe, missing values should be input as NA, or a cctfit object of class 'cct'.

...

Additional arguments: polych=T (for ordinal data only), to use the polychoric correlations rather than Pearson correlations.

Details

The scree plot is generated from the respondent by respondent correlation (Pearson) matrix.

Examples

data(hotcold)
screeplot(hotcold)
## With this example data, a scree plot with 2 substantial factors 
##               (suggesting two cultures) is produced.