plot.pers

an integer, defining the (logit) range for y-axis

logical wether to order items by difficulty

sortdif

see <code><a rd-options="" href="/link/plot?package=pairwise&version=0.3.1" data-mini-rdoc="pairwise::plot">plot</a></code>

main

ylab

logical wether to use itemnames in the resulting plot

itemNames

color for bar filling of the ability histogram

fillCol

color for bar lines of the ability histogram

lineCol

see <code><a rd-options="" href="/link/text?package=pairwise&version=0.3.1" data-mini-rdoc="pairwise::text">text</a></code>

see <code><a rd-options="" href="/link/hist?package=pairwise&version=0.3.1" data-mini-rdoc="pairwise::hist">hist</a></code>

breaks

see <code><a rd-options="" href="/link/points?package=pairwise&version=0.3.1" data-mini-rdoc="pairwise::points">points</a></code>

other parameters passed to <code><a rd-options="" href="/link/hist?package=pairwise&version=0.3.1" data-mini-rdoc="pairwise::hist">hist</a></code> and <code><a rd-options="" href="/link/text?package=pairwise&version=0.3.1" data-mini-rdoc="pairwise::text">text</a></code>.


S3 plotting method for object of class<code>"pers"</code>


Performs the explicit calculation
-- not estimation! -- of the Rasch item parameters for dichotomous and
polytomous item responses, using a pairwise comparison approach. Person
parameters (WLE) are calculated according to Warm's weighted likelihood
approach.

plot.pers: S3 Plotting Person - Item Map

Description

Usage

Arguments