axis {base} | R Documentation |
Adds an axis to the current plot, allowing the specification of the side, position, labels, and other options.
axis(side, at, labels = TRUE, ...)
side |
an integer specifying which side of the plot the axis is to be drawn on. |
at |
the points at which tick-marks are to be drawn. |
labels |
this can either be a logical value specifying whether (numerical) annotations are to be made at the tickmarks, or a vector of character strings to be placed at the tickpoints. |
... |
graphical parameters may also be passed as arguments to this function. |
This function is invoked for its side effect, which is to add an axis to an already existing plot. The axis is placed as follows: 1=below, 2=left, 3=above and 4=right.
plot(1:4, rnorm(4), axes=FALSE) axis(1, 1:4, LETTERS[1:4]) axis(2) box() #- to make it look "as usual" plot(1:7, rnorm(7), type = 's', xaxt='n', col = 'red') axis(1, 1:7, LETTERS[1:7], col.axis = 'blue')