WrightMap

Package: WrightMap
Type: Package
Title: IRT Item-Person Map with 'ConQuest' Integration
Version: 1.2.1
Date: 2016-03-18
Author: David Torres Irribarra & Rebecca Freund
Maintainer: David Torres Irribarra <dti@berkeley.edu>
Description: A powerful yet simple graphical tool available in the field of psychometrics is the Wright Map (also known as item maps or item-person maps), which presents the location of both respondents and items on the same scale. Wright Maps are commonly used to present the results of dichotomous or polytomous item response models. The 'WrightMap' package provides functions to create these plots from item parameters and person estimates stored as R objects. Although the package can be used in conjunction with any software used to estimate the IRT model (e.g. 'TAM', 'mirt', 'eRm' or 'IRToys' in 'R', or 'Stata', 'Mplus', etc.), 'WrightMap' features special integration with 'ConQuest' to facilitate reading and plotting its output directly.The 'wrightMap' function creates Wright Maps based on person estimates and item parameters produced by an item response analysis. The 'CQmodel' function reads output files created using 'ConQuest' software and creates a set of data frames for easy data manipulation, bundled in a 'CQmodel' object. The 'wrightMap' function can take a 'CQmodel' object as input or it can be used to create Wright Maps directly from data frames of person and item parameters.
License: BSD_2_clause + file LICENSE
Depends: R (>= 3.0.0)
NeedsCompilation: no
Packaged: 2016-03-23 10:30:35 UTC; dti
Repository: CRAN
Date/Publication: 2016-03-23 23:41:08

Install log

* installing to library '/home/ddbj/local/lib64/R/library'
* installing *source* package 'WrightMap' ...
** package 'WrightMap' successfully unpacked and MD5 sums checked
** R
** inst
** preparing package for lazy loading
** help
*** installing help indices
  converting help for package 'WrightMap'
    finding HTML links ... done
    CQmodel                                 html  
    WrightMap-package                       html  
    fitgraph                                html  
    item.person.data                        html  
    item.side                               html  
    make.deltas                             html  
    make.thresholds                         html  
    person.side                             html  
    plotCI                                  html  
    ppPlot                                  html  
    wrightMap                               html  
** building package indices
** testing if installed package can be loaded
* DONE (WrightMap)
Making 'packages.html' ... done