Draw barplots — circos.barplot • circlize

Draw barplots

circos.barplot(value, pos, bar_width = 0.6,
    col = NA, border = "black", lwd = par("lwd"), lty = par("lty"),
    sector.index = get.current.sector.index(),
    track.index = get.current.track.index())

Arguments

value	A numeric vector or a matrix. If it is a matrix, columns correspond to the height of bars.
pos	Positions of the bars.
bar_width	Width of bars. It assumes the bars locating at `x = 1, 2, ...`.
col	Filled color of bars.
border	Color for the border.
lwd	Line width.
lty	Line style.
sector.index	Index of sector.
track.index	Index of track.

Details

If the input variable is a matrix, it draws a stacked barplot.

Please note, the x-values of barplots are normally integer indices. Just be careful when initializing the circular layout.

Examples

circos.initialize(letters[1:4], xlim = c(0, 10))
circos.track(ylim = c(0, 1), panel.fun = function(x, y) {
    value = runif(10)
    circos.barplot(value, 1:10 - 0.5, col = 1:10)
})
circos.track(ylim = c(-1, 1), panel.fun = function(x, y) {
    value = runif(10, min = -1, max = 1)
    circos.barplot(value, 1:10 - 0.5, col = ifelse(value > 0, 2, 3))
})
circos.clear()

circos.initialize(letters[1:4], xlim = c(0, 10))
circos.track(ylim = c(0, 4), panel.fun = function(x, y) {
    value = matrix(runif(10*4), ncol = 4)
    circos.barplot(value, 1:10 - 0.5, col = 2:5)
})
circos.clear()