| units {base} | R Documentation |
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.
cm translates inches in to cm (centimeters).
xinch(x = 1, warn.log = TRUE) yinch(y = 1, warn.log = TRUE) xyinch(xy = 1, warn.log = TRUE) cm(x)
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. |
all(c(xinch(),yinch()) == xyinch()) # TRUE
xyinch()
xyinch #- to see that is really delta{"usr"} / "pin"
cm(1)# = 2.54
## plot labels offset 0.12 inches to the right
## of plotted symbols in a plot
data(mtcars)
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')
})