Arguments
nrgcols
the number of colors (>= 1) to be used in the red
and green palette.
rlabels
vector of character strings to be placed at the row
tickpoints, labels for the rows of x.
clabels
vector of character strings to be placed at the
column tickpoints, labels for the columns of x.
rcols
colors to be used for the labels of the rows of
x. rcols can have either length 1, in which case
all the labels are displayed using the same color, or the same
length as rlabels, in which case a color is specified
ccols
colors to be used for the labels of the columns of
x. ccols can have either length 1, in which case
all the labels are displayed using the same color, or the same
length as clabels, in which case a color is specif
title
character string, overall title for the plot.
...
graphical parameters may also be supplied as arguments to
the function (see par). E.g. zlim=c(-3,3)