R help - Oct 2007 - Using expression for Italics and object evaluation in plot title

Hi,

I am trying to get a title on a plot that contains both some formatting
and prints the value of an object.  What I have been using to get the
italics is:

title(sub=expression(paste("Log-rank test
",italic("p"),"-value = ",p.val)))

But this prints "p.val" rather than the object value.  I have tried
various combinations of paste and expression but it seems that to get
the italic expression function has to be called first.

Any ideas on how to get round this problem?

Thanks

Dan
-- 
**************************************************************
Daniel Brewer, Ph.D.
Institute of Cancer Research
Email: daniel.brewer at icr.ac.uk
**************************************************************

The Institute of Cancer Research: Royal Cancer Hospital, a charitable Company
Limited by Guarantee, Registered in England under Company No. 534147 with its
Registered Office at 123 Old Brompton Road, London SW7 3RP.

This e-mail message is confidential and for use by the a...{{dropped:2}}

Try bquote as in:

http://tolstoy.newcastle.edu.au/R/e2/help/07/09/26353.html

On 10/10/07, Daniel Brewer <daniel.brewer at icr.ac.uk>
wrote:
> Hi,
>
> I am trying to get a title on a plot that contains both some formatting
> and prints the value of an object.  What I have been using to get the
> italics is:
>
> title(sub=expression(paste("Log-rank test
",italic("p"),"-value = ",p.val)))
>
> But this prints "p.val" rather than the object value.  I have
tried
> various combinations of paste and expression but it seems that to get
> the italic expression function has to be called first.
>
> Any ideas on how to get round this problem?
>
> Thanks
>
> Dan
> --
> **************************************************************
> Daniel Brewer, Ph.D.
> Institute of Cancer Research
> Email: daniel.brewer at icr.ac.uk
> **************************************************************
>
> The Institute of Cancer Research: Royal Cancer Hospital, a charitable
Company Limited by Guarantee, Registered in England under Company No. 534147
with its Registered Office at 123 Old Brompton Road, London SW7 3RP.
>
> This e-mail message is confidential and for use by the...{{dropped:9}}