toFactorThreshold

Convert response function intercepts to factor thresholds

Factor out logic
and math common to Item Factor Analysis fitting, diagnostics, and
analysis. It is envisioned as core support code suitable for more
specialized IRT packages to build upon. Complete access to optimized C
functions are made available with R_RegisterCCallable().
This software is described in Pritikin & Falk (2020) <doi:10.1177/0146621620929431>.

Joshua Pritikin

Response Probability Functions

Jonathan Weeks

Li Cai

Carrie Houts

Phil Chalmers

toFactorThreshold function

<dl><dt>intercept</dt>
<dd>a matrix with items in the columns and intercepts in the rows</dd>
<dt>slope</dt>
<dd>a matrix with items in the columns and slopes in the rows</dd>
<dt>ogive</dt>
<dd>the ogive constant (default rpf.ogive)</dd></dl>

Arguments

Convert response function intercepts to factor thresholds — toFactorThreshold

<dl>

<dt>intercept</dt>
<dd>a matrix with items in the columns and intercepts in the rows</dd>


<dt>slope</dt>
<dd>a matrix with items in the columns and slopes in the rows</dd>


<dt>ogive</dt>
<dd>the ogive constant (default rpf.ogive)</dd>

</dl>

toFactorThreshold: Convert response function intercepts to factor thresholds

Description

Usage

Value

Arguments

See Also