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On Tue, Mar 27, 2012 at 5:36 PM, HJ YAN <yhj204@googlemail.com> wrote:

> Thank you very much Gerrit, for the nice hints!
>
> Just done some more googling and reaserches on this and trying to
> answering it myself...
>
> Below is the code that works for double lines (adopted from Gerrit's
> hints) and some of the formats (e.g. 1 and 3, but not 2 and 4) listed below:
>
> (1) \sigma^2
> (2) \tau^{2s}
> (3) \mu_i
> (4) \pi_{2s}
>
> plot(1:3, ylab = expression("Superscript in greek letters (" * mu^2 ~ "m)")
>    , xlab = expression("Subscript in greek letters" ~ mu[2]* ~ pi)
>   , main = expression(atop("Happy Easter" ,"to all R-Helpers")))
>
>
> For using greek letters, am still a bit confused when needing a
> "*" though...e.g. seems it needs a "*" in front of greek letter
> expressions, when applying 'expression ("...")'. And a "*" seems not
> required when a greek letter is needed outside the double quotations, e.g.
>
when applying just 'expression(...)'.  Again, a "*" is needed when making
subscript as shown above...

It seems "~" is reserved for making spaces before/between greek letters.
What if we need "~" in the title as "~" is a standard notation in
statistics when expressing "is from" when writing down a distribution, e.g.
'X~N(0,1)'...

HJ



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> On Tue, Mar 27, 2012 at 2:39 PM, Gerrit Eichner <
> Gerrit.Eichner@math.uni-giessen.de> wrote:
>
>> Hi, HJ,
>>
>> see
>>
>> ?plotmath
>>
>>  Hth  --  Gerrit
>>
>> ------------------------------**------------------------------**---------
>> Dr. Gerrit Eichner                   Mathematical Institute, Room 212
>> gerrit.eichner@math.uni-**giessen.de <gerrit.eichner@math.uni-giessen.de>  Justus-Liebig-University Giessen
>> Tel: +49-(0)641-99-32104          Arndtstr. 2, 35392 Giessen, Germany
>> Fax: +49-(0)641-99-32109        http://www.uni-giessen.de/cms/**eichner<http://www.uni-giessen.de/cms/eichner>
>> ------------------------------**------------------------------**---------
>>
>>
>>
>> On Tue, 27 Mar 2012, HJ YAN wrote:
>>
>>  Dear R-help,
>>>
>>> I am trying to express myself as best as I can here. If you also use
>>> Latex
>>> to edit math reports or other languages with similar editing method,
>>> you'll see what I'm talking about. My sincere appologies if my question
>>> is
>>> not clear enough to some extend, as also I'm not able to provide my code
>>> here because I don`t know which one I can use...
>>>
>>> When editing the title in R plots, such as using 'plot', or 'xyplot' in
>>> 'lattic', what method do you use to write greek letters and make use of
>>> superscript and subscript, e.g. to write mathematical expressions like
>>> using Latex:
>>>
>>> \sigma^2
>>> \tau^{2s}
>>> \mu_i
>>> \pi_{2s}
>>>
>>> Also I would like to learn how to make two lines in the main title or sub
>>> title if the text I need it too long for putting in a single line, e.g.
>>> are
>>> there some R code/syntax allowing me to do something like in Latex to
>>> make
>>> two lines in the title, for example using '//' or '\\' to seperate the
>>> two
>>> parts of the text I want to put in two lines??
>>>
>>> I heard about using something like
>>>
>>> plot(x,y, main=expression(....))
>>>
>>> but from neither '?plot' or '?expression' could I find comprehensive
>>> information about what I need...
>>>
>>> Many thanks!
>>> HJ
>>>
>>>        [[alternative HTML version deleted]]
>>>
>>> ______________________________**________________
>>> R-help@r-project.org mailing list
>>> https://stat.ethz.ch/mailman/**listinfo/r-help<https://stat.ethz.ch/mailman/listinfo/r-help>
>>> PLEASE do read the posting guide http://www.R-project.org/**
>>> posting-guide.html <http://www.r-project.org/posting-guide.html>
>>> and provide commented, minimal, self-contained, reproducible code.
>>>
>>
>

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