[R] title of r plots

[li li]

Thanks very much.
Also How do add an empty space when using expression()?
When I do the following, it returns an error message.


plot(1,1,main=expression(-70*degree*C%+-%10*degree*C/Ambient Condition))



   Hanna


2015-02-27 23:03 GMT-05:00 William Dunlap <wdunlap at tibco.com>:

>  plot(1,1,main=expression(-70*degree*C%+-%10*degree*C/Ambient))
>
>  Bill Dunlap
> TIBCO Software
> wdunlap tibco.com
>
>  On Fri, Feb 27, 2015 at 7:27 PM, li li <hannah.hlx at gmail.com> wrote:
>
>>   Hi all,
>>   I would like to add "-70°C ± 10°C/Ambient"  as the title of my plot.
>> Could anyone give some help on this?
>>   Thanks.
>>    Hanna
>>
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>>
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