isop.plot3d {ISOP}R Documentation

Generates 3D-Plot of underlying system characteristics table

Description

This function is a wrapper for persp, setting some default values in the arguments

Usage

isop.plot3d(sysch, theta = 300, phi = 30, expand = 0.5, col = heat.colors(prod(dim(what))), bg = "white", xlab = "response vectors", ylab = "items", zlab = "discrimination" , ticktype = "detailed")

Arguments

sysch

Table of system characteristics genererated by isop.sysch

theta

see: persp

phi

see: persp

expand

see: persp

col

see: persp

bg

see: persp

xlab

see: persp

ylab

see: persp

zlab

see: persp

ticktype

see: persp

Details

This function is a wrapper for persp.

Author(s)

Stefan Nachtnebel

References

Hartmann Scheiblechner (2003) Nonparametric IRT: Testing the bi-isotonicity of isotonic probabilistic models (ISOP) Psychometrika, 68, 1, 79–96

See Also

isop.sysch, isop.plotFreqs, persp


[Package ISOP version 1.0 Index]