theta_lim does not adjucst the latent trait range

[Nikolaos Tsigilis]

Dear Phil,

I want to examine the "trace" and "info" graphs using the itemplot function. I also want to change the range of the theta_lim from the default c(-6, 6) to c(-3, 3), but it seems that the mirt does not adjust the graph. 

This is my code

itemplot(fit.cogn, 5, type = "trace", theta_lim = c(-3, 3))

This is what I get

[Phil Chalmers]

This was fixed on the dev version sometime back, however this version has not been released to CRAN yet. Try the following:

#####

devtools::install_github('philchalmers/mirt')

library(mirt)
mod <- mirt(Science)
itemplot(mod, 1, type = "trace", theta_lim = c(-3, 3))

#####

Phil

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