A funirction for handling large numbers of students and items in plots.

This function helps to break the plots into several plots when many items or persons are present.

plot_wrap(object, type, items_per = NULL, persons_per = NULL, pfa = NULL)

Arguments

object	An object of class wizirt_fit.
type	Character. Currently, can be 'obs', 'trace', 'info', 'resid', 'stand', 'tinfo', 'theta', 'diff', 'theta_diff', 'np_prf', 'ld', or 'ld_pairs'.
items_per	Numeric. How many items to plot per page?
persons_per	Numeric. How many persons to plot per page?
pfa	An object from irt_person_fit(). If omitted, irt_person_fit() is called within the function with the default settings.