R: Width and Height of a grid grob

widthDetails {grid} | R Documentation

## Width and Height of a grid grob

### Description

These generic functions are used to determine the size of grid grobs.

### Usage

    widthDetails(x)
    heightDetails(x)
    ascentDetails(x)
    descentDetails(x)

### Arguments

`x` | A grid grob.

### Details

These functions are called in the calculation of `"grobwidth"` and `"grobheight"` units. Methods should be written for classes derived from grob or gTree where the size of the grob can be determined (see, for example `grid:::widthDetails.frame`).

The ascent of a grob is the height of the grob by default and the descent of a grob is zero by default, except for text grobs where the label is a single character value or expression.

### Value

A unit object.

### Author(s)

Paul Murrell

### See Also

`absolute.size`.

[Package grid version 2.15.1 Index]