Plot Tetrachoric Correlations

This function creates a tetrachoric correlation plot using the tetrachoric function provided by the psych package.

plotTetrachoric(mctd, group_by_concept = TRUE, equal_coords = FALSE)

Arguments

mctd	Existing mcTestAnalysis data object
group_by_concept	If TRUE, questions are grouped by concept group and guidelines and guide text are added to the plot.
equal_coords	If TRUE, coordinates of the plot are constrained to be equal (square plot).