importFrom(ggplot2, ggplot)
importFrom(ggplot2, aes_string)
importFrom(ggplot2, geom_line)
importFrom(ggplot2, geom_point)
importFrom(ggplot2, ggtitle)
importFrom(ggplot2, theme)
importFrom(ggplot2, element_blank)
importFrom(ggplot2, element_text)
importFrom(ggplot2, scale_x_continuous)
importFrom(ggplot2, scale_y_continuous)
importFrom(ggplot2, xlab)
importFrom(ggplot2, ylab)
importFrom(ggplot2,geom_smooth)
importFrom(polycor, polyserial)
importFrom(stats,cor)
importFrom(stats,qnorm)
importFrom(stats,sd)          
import(car)

export(itemanalysis1, itemanalysis2)


