a vector of integers, specifying the tracks for plotting line.
color.col
integer, specifying the column that contains the color.
custom.length
NULL or numeric, specifying line length.
arrow.length
length of the edges of the arrow head (in inches). See arrows
arrow.angle
angle from the shaft of the arrow to the edge of the arrow head. See arrows
arrow.code
integer code, determining kind of arrows to be drawn. See arrows
...
further graphical parameters (from par), such as lty and lwd.
Details
Data is a data.frame, with at least two columns named 'Chr' and 'Pos', specifying the chromosomal positoins for each line in every row. An additional column can be used to specify the line color. Default line length is determined by track height.