importFrom("graphics", "plot", "points", "segments")
importFrom("stats", "coef", "glm", "model.matrix", "residuals",
             "terms", "vcov")

export(qvcalc, worstErrors, indentPrint, qvcalc.default, qvcalc.lm,
       qvcalc.coxph, qvcalc.itempar, qvcalc.survreg)

S3method(print, qv)
S3method(summary, qv)
S3method(plot, qv)

S3method(qvcalc, itempar)
S3method(qvcalc, lm)
S3method(qvcalc, coxph)
S3method(qvcalc, survreg)
S3method(qvcalc, default)
