If you use sirt and have suggestions for improvement or have found bugs, please email me at robitzsch@leibniz-ipn.de.
Please always provide a minimal dataset, necessary to demonstrate the problem,
a minimal runnable code necessary to reproduce the issue, which can be run on the given dataset, and
all necessary information on the used librarys, the R version, and the OS it is run on, perhaps a sessionInfo().
The official version of sirt is hosted on CRAN and may be found here.
The CRAN version can be installed from within R using:
utils::install.packages("sirt")
The version hosted here is the development version of sirt.
The GitHub version can be installed using devtools as:
devtools::install_github("alexanderrobitzsch/sirt")