Uses layout()
to set up multiple locus plots aligned in a column.
set_layers(n = 1, heights = c(rep(3, n), 2), rev = FALSE)
Sets layout()
to enable multiple plots aligned in a column. The
gene track is assumed to be positioned on the bottom. Returns par()
invisibly so that layout can be reset to default at the end of plotting.
Number of plots (not including gene tracks on bottom)
Vector of length nrow + 1
specifying height for plots with
a gene track on the bottom
Logical whether to reverse plotting order and plot from bottom to top