[R] Math expression in R plot

[Bert Gunter]

... and she might also want an additional space between "vs. and
"eta", either by inserting it within the quotes explicitly or using:

 expression(plain("Estimator vs.")~eta)

-- Bert

On Fri, Sep 21, 2012 at 8:15 AM, peter dalgaard <pdalgd at gmail.com> wrote:
>
> On Sep 21, 2012, at 17:04 , li li wrote:
>
>> Dear all,
>>   In my R plot, I would like to add the title as "Estimator vs. Eta",
>> where I want to use the greek letter eta.
>> I was trying to use expression(plain("Estimator  vs.") *eta* ). It does not
>> seem to work.
>> Can anyone familiar with this give some help?
>>
>
> I'd try dropping the 2nd star. Remember that expressions must be valid R code. You wouldn't be able to say
>
> a <- plain("Estimator  vs.") * eta *
>
> either (not even if plain was an actual numeric function and eta a numeric variable).
>
> --
> Peter Dalgaard, Professor,
> Center for Statistics, Copenhagen Business School
> Solbjerg Plads 3, 2000 Frederiksberg, Denmark
> Phone: (+45)38153501
> Email: pd.mes at cbs.dk  Priv: PDalgd at gmail.com
>
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-- 

Bert Gunter
Genentech Nonclinical Biostatistics

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