tif_auto: Item Information Function for IRT 1~3PLM

In takuizum/irtfun2: Some useful functions for IRT

Description

This function returns data.frame of iif in selected sequence.

Usage

tif_auto(
  para,
  min = -6,
  max = 6,
  length.out = 301,
  D = 1.702,
  labs = F,
  simplify = T
)

Arguments

para	the item parameter data.frame estimated by estip
min	the slope parameter
max	the location parameter
length.out	desired length of the sequence.
D	a scale constant
labs	logical. If TRUE, result data.frame has theta column.
simplify	logical. If TRUE, result is vactor not data.frame.

takuizum/irtfun2 documentation built on May 10, 2020, 8:30 a.m.