Arguments
x
a data frame with columns chromosome, coordinate, cn, p_value
y
a data frame with columns chromosome, coordinate for plotting
boundaries
z
a data frame with columns chromsome, start, end, segmean specifying
segments called from copy number (optional)
chr
a character string specifying chromosome
CNscale
Character string specifying if copy number calls supplied are
relative (i.e.copy neutral == 0) or absolute (i.e. copy neutral ==2). One of
"relative" or "absolute"
layers
additional ggplot2 layers to add