[R] how to control ticks

[Martyn Byng]

Hi,

The following seems to work:

plot(1:12,1:12,xaxt='n',xlab=NA)
axis(1,at=1:12,labels=c("J","F","M","A","M","J","J","A","S","O","N","D")
)

So I'd guess that your X axis data, file$time, doesn't take the values 1
to 12.

Martyn

-----Original Message-----
From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org]
On Behalf Of Yogesh Tiwari
Sent: 21 December 2010 12:37
To: r-help
Subject: [R] how to control ticks

Hi,
I want 12 ticks at axis 1 and want to write Jan-Dec on each.

something like:

axis(1, at=1:12,
labels=c('J','F','M','A','M','J','J','A','S','O','N','D'))

I could omit default ticks but now how to control ticks.

plot(file$time, file$ch4*1000, ylim=c(1500,1700), xaxt='n', xlab= NA,
ylab=NA,col="blue",yaxs="i",lwd=2, pch=10, type="b")#

axis(1, at=1:12,
labels=c('J','F','M','A','M','J','J','A','S','O','N','D'))

BUT above is not working, and there is no error as well.

Pls help,

Regards,
Yogesh

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