The catIrt package contains functions designed to simulate data that conform to basic unidimensional IRT models along with Post-Hoc CAT simulations of those models given various item selection methods, ability estimation methods, and termination criteria.
Within an R session, type (to install a binary package from CRAN)
install.packages("catIrt")
or (to install the most current source package from github)
if(length(find.package("devtools", quiet = TRUE)) == 0)
install.packages("devtools")
devtools::install_github("swnydick/catIrt")
The first two lines of the second code block simply installs the devtools package if R cannot find its location. The devtools package contains the install_github
function and is needed to easily install packages from github.
Any scripts or data that you put into this service are public.
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.