plotInformation {ifaTools}

Plot item information in the latent distribution

Description

For multidimensional items, you will need to supply a basis vector. This vector is normalized to unit length.

Usage

plotInformation(grp, ..., width = 3, showTotal = FALSE, basis = c(1))

Arguments

grp

an IFA group

...

Not used. Forces remaining arguments to be specified by name.

width

the plot will span from -width to width

showTotal

whether to plot the total item information

basis

the basis vector (for multidimensional items)