Hide axis

1	`par(xaxt='n')`

1	`plot(...,xaxt='n')`

Show the axis

1	`par(xaxt='s')`

Print the x axis

1	`axis(1, at=at, labels=labels)`

Example:

par(xaxt='n')
plot(1:10)
x = c(1,3,7,10)
par(xaxt='s')
axis(1, at=x, labels=x)