getXY_in_parent_vp {ComplexHeatmap} | R Documentation

## Convert XY in a Parent Viewport

### Description

Convert XY in a Parent Viewport

### Usage

    getXY_in_parent_vp(u, vp_name = "ROOT")

### Arguments

`u` | A list of two units which correspond to x and y.
`vp_name` | The name of the parent viewport.

### Details

It converts a coordinate measured in current viewport to the coordinate in a parent viewport.

In the conversion, all units are recalculated as absolute units, so if you change the size of the interactive graphic window, you need to rerun the function.

### Value

A list of two units.

### Examples

    grid.newpage()
    pushViewport(viewport(x = 0.5, y = 0.5, width = 0.5, height = 0.5, just = c("left", "bottom")))
    grid.rect()
    grid.points(x = unit(2, "cm"), y = unit(2, "cm"), pch = 1)
    u = list(x = unit(2, "cm"), y = unit(2, "cm"))
    u2 = getXY_in_parent_vp(u)
    popViewport()
    grid.rect(gp = gpar(col = "red"))
    grid.points(x = u2$x, u2$y, pch = 2)

[Package ComplexHeatmap version 2.6.2 Index]