plot_matrix: plot (rather than print) a matrix
Description
a helper function
Usage
plot_matrix(mat, greyout = NULL, prunkcol = NULL, label_col = "black")
Value
a plot and an invisible list with coordinates and
content of the matrix to be plotted
Arguments
- mat
square matrix
- greyout
numeric, the values to be grayed out
- prunkcol
color value, which if set to some color will highlight
unknown relationships with rectangles of that color.
- label_col
color values for column and row labels