isop.plot2d {ISOP}R Documentation

Plots a set of item characteristic curves

Description

Draws a comparsion plot of one or more item characteristics.

Usage

isop.plot2d(sysch, items = (1:dim(sysch)[2])[-dim(sysch)[2]], title = "Item characteristics", type="l", xlab = "response vectors", ylab = "discrimination")

Arguments

sysch

Table of system characteristics genererated by isop.sysch

items

Indices of the items to draw as item characteristic curve. By default all items are selected.

title

The title of the plot: see title

type

The type of the brush: see plot

xlab

A title for the x axis: see title

ylab

A title for the x axis: see title

Details

Only sysch is needed. This function is a wrapper for plot, title and lines.

Author(s)

Stefan Nachtnebel

See Also

isop.sysch, isop.plot3d, isop.plotFreqs, plot, title, lines


[Package ISOP version 1.0 Index]