Thank you David and Bert.
x<-3plot(1:10)
title(bquote( x <= .(x) ))
would do what I want. But I also want the title printed in bold font. so I tried
x<-3
plot(1:10)
title(bquote(bold(x <= .(x)) ))
But this did not print the "less than equal to" symbol and the number 3 (from
variable x) in bold. Anyway to solve that?
Thanks again!
John
----- Original Message ----
From: David Winsemius <dwinsem...@comcast.net>
To: Peter Ehlers <ehl...@ucalgary.ca>
Cc: array chip <arrayprof...@yahoo.com>; R <r-help@r-project.org>
Sent: Tue, June 28, 2011 11:04:07 AM
Subject: Re: [R] how to print "<=" in plot title
On Jun 28, 2011, at 1:52 PM, Peter Ehlers wrote:
> On 2011-06-28 10:25, array chip wrote:
>> Hi, how can I print "<=" (I mean the symbol of just one character) in the
main
>> title of a plot?
>>
>> for example:
>>
>> plot(1:10, main=paste("x<=", x))
>>
>> where variable x is some number generated on the fly.
>
> x <- 2.718
> plot(0, 0)
> title(bquote( x %<=% .(x) ))
I think John wants the mathematical symbol. As was pointed out in a question
last week, the `<=` plotmath symbol needs to be flanked by operands.
Non-printing operands can be created with the phantom function:
title(main=expression(phantom("")<=phantom("")) )
Contrary to Gunters's comment, this is probably going to work on all the three
major OS platforms. It depends only on whether there is a Symbol font mapped to
the output device.
>
> ?plotmath
Yes. The details are there.
>
> Peter Ehlers
>
David Winsemius, MD
West Hartford, CT
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