[R] changing the position of the y label (ylab)

Stephen Tucker brown_emu at yahoo.com
Tue Jun 26 09:04:56 CEST 2007


If by 'position' you mean the distance from the axes, I think 'mgp' is the
argument you are looking for (see ?par)-

You can set this in par(), plot() [which will affect both x and y labels], or
title():

par(mar=rep(6,4))
plot(NA,NA,xlim=0:1,ylim=0:1,xlab="X",ylab="")
title(ylab="Y2",mgp=c(4,1,0))

if you want to change 'position' parallel to the axis, then you probably have
to do
plot(...,xlab="",ylab="")

and set labels using mtext(); playing around with the 'adj' argument.

Btw, you can use '\n' to denote new line:
title(ylab="Onset/Withdrawl\nDate",mgp=c(4,1,0))


--- Etienne <etiennesky at yahoo.com> wrote:

> How can I change the position of the ylab, after
> enlarging the margins with par(mar=...)? 
> 
> Here is the relevant code snippet
> 
> ----
> par(mar=c(5.1,5.1,4.1,2.1))
>
plot(c(1979,2003),c(40,50),ylim=c(1,73),lab=c(20,10,1),pch=21,col='blue',bg='blue',axes=FALSE,xlab="Years",ylab="Onset/Withdrawl
> Date",font.lab=2)
> box()
> axis(1,las=2)
>
axis(2,las=2,labels=c('JAN','FEB','MAR','APR','MAY','JUN','JUL','AUG','SEP','OCT','NOV','DEC','JAN'),at=seq(from=1,to=73,by=6))
> axis(3,labels=FALSE)
> axis(4,labels=FALSE,at=seq(from=1,to=73,by=6))
> ----
> 
> Thanks
> 
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