an index for the series of tests, usually assuming adjacent tests are
correlated.
pmat
matrix of p-values, each column represents a different test, rows
correspond to the pos[ition] index
lty
line type, see par()
lwd
line width, see par()
col
line color, see par()
title
title for the top-center of the plot
legend
vector of text strings explaning the tests in each column of pmat
xlab
x axis label
ylab
y axis label
Side Effects
none
Details
The default height for the y-axis is 3, which corresponds to a p-value
of 1e-3. If any p-value is smaller, the height is -log10 of the
smallest p-value in pmat.