After the update to TAM 3.4-26, there is an error in
plot(mod_2PL, items = 1, type = "expected", wle=mod_2PL_abilities[["theta"]]) Error in plot.tam.mml(mod_1PL, items = 1, type = "expected", : object 'theta0' not found
which "makes sense" when investigating the code, as line 423 assumes that theta0 exists, even though it only comes into existence when type="items". You have initiated a theta2 <- NULL, has there been any mixup between theta0 and theta2? (I haven't scrutinized your code in detail)
Thank you for reporting. When working on the output of plot.tam() in the last version update, theta0 got lost somewhere. I will upload a bugfix on Github in the next hour.
After the update to TAM 3.4-26, there is an error in
plot(mod_2PL, items = 1, type = "expected", wle=mod_2PL_abilities[["theta"]]) Error in plot.tam.mml(mod_1PL, items = 1, type = "expected", : object 'theta0' not found
which "makes sense" when investigating the code, as line 423 assumes that theta0 exists, even though it only comes into existence whentype="items"
. You have initiated atheta2 <- NULL
, has there been any mixup between theta0 and theta2? (I haven't scrutinized your code in detail)