New user to R and RkWard so I'm trying to work through things. One of the things I'm trying to do is play around with the IRT features. The problem I'm having is that I don't have the proper "class" to run the statistics. I can change the variable type (integer, factor, string, etc) but I can't figure out how to change the class. Any suggestions would be helpful. <br>
<br>Thanks!