get.cell.meta.data: Get the meta data of a cell
In circlize: Circular Visualization

get.cell.meta.data

R Documentation

Get the meta data of a cell

Description

Get the meta data of a cell

Usage

get.cell.meta.data(name, sector.index = get.current.sector.index(),
    track.index = get.current.track.index())

Arguments

`name`	Only support one name at a time, see "details" section
`sector.index`	Index of the sector
`track.index`	Index of the track

Details

The following meta information for a cell can be obtained:

sector.index: The name (index) for the sector
sector.numeric.index: Numeric index for the sector
track.index: Numeric index for the track
xlim: Minimal and maximal values on the x-axis
ylim: Minimal and maximal values on the y-axis
xrange: Range of xlim. It equals to xlim[2] - xlim[1]
yrange: Range of ylim
xcenter: Center of x-axis. It equals to (xlim[2] + xlim[1])/2
ycenter: Center of y-axis
cell.xlim: Minimal and maximal values on the x-axis extended by cell paddings
cell.ylim: Minimal and maximal values on the y-axis extended by cell paddings
xplot: Degrees for right and left borders of the cell. The values ignore the direction of the circular layout (i.e. whether it is clock wise or not).
yplot: Radius for top and bottom borders of the cell.
cell.width: Width of the cell, in degrees.
cell.height: Height of the cell, simply yplot[2] - yplot[1]
cell.start.degree: Same as xplot[1]
cell.end.degree: Same as xplot[2]
cell.bottom.radius: Same as yplot[1]
cell.top.radius: Same as yplot[2]
track.margin: Margin for the cell
cell.padding: Padding for the cell

The function is useful when using panel.fun in circos.track to get detailed information of the current cell.

Examples

sectors = letters[1:4]
circos.initialize(sectors, xlim = c(0, 1))
circos.trackPlotRegion(ylim = c(0, 1), panel.fun = function(x, y) {
    print(get.cell.meta.data("xlim"))
})
print(get.cell.meta.data("xlim", sector.index = "a", track.index = 1))
circos.clear()

circlize documentation built on May 29, 2024, 1:59 a.m.