units {graphics} | R Documentation |

## Graphical Units

### Description

`xinch`

and `yinch`

convert the specified number of inches
given as their arguments into the correct units for plotting with
graphics functions. Usually, this only makes sense when normal
coordinates are used, i.e., *no* `log`

scale (see the
`log`

argument to `par`

).

`xyinch`

does the same for a pair of numbers `xy`

,
simultaneously.

### Usage

xinch(x = 1, warn.log = TRUE)
yinch(y = 1, warn.log = TRUE)
xyinch(xy = 1, warn.log = TRUE)

### Arguments

`x,y` |
numeric vector |

`xy` |
numeric of length 1 or 2. |

`warn.log` |
logical; if `TRUE` , a warning is printed in case
of active log scale. |

### Examples

all(c(xinch(),yinch()) == xyinch()) # TRUE
xyinch()
xyinch #- to see that is really delta{"usr"} / "pin"
## plot labels offset 0.12 inches to the right
## of plotted symbols in a plot
with(mtcars, {
plot(mpg, disp, pch=19, main= "Motor Trend Cars")
text(mpg + xinch(0.12), disp, row.names(mtcars),
adj = 0, cex = .7, col = 'blue')
})

[Package

*graphics* version 2.2.1

Index]