[R] Subscript and superscript on one symbol; plotmath.

Duncan Murdoch murdoch@dunc@n @end|ng |rom gm@||@com
Thu Dec 10 02:03:01 CET 2020

On 09/12/2020 6:45 p.m., Rolf Turner wrote:
> On Wed, 9 Dec 2020 06:18:10 -0500
> Duncan Murdoch <murdoch.duncan using gmail.com> wrote:
>> On 09/12/2020 3:06 a.m., Rolf Turner wrote:
>>> I would like to produce, as graphical annotation, the Greek letter
>>> sigma with a superscript of 2 and a subcript of 11.  (I.e. the top
>>> left hand entry of a covariance matrix.)
>>> I've tried:
>>> plot(1:10,main=expression({sigma^2}[11]))
>>> (and variants).  This "sort of" works but there is an undesirable
>>> gap between the sigma and the subscript 11. (IOW the subscript is to
>>> the right of the superscript, whereas ideally the first "1" in "11"
>>> should be vertically below the superscript.
>> When I run
>>    plot(1:10,main=expression(sigma[11]^2))
>> I think I get what you want.
> <SNIP>
> Dang!!! I was sure that that's one of the variants I'd tried!!!
> Duh.  This is indeed exactly what I want.  Thanks Duncan.

You probably did try it, but remember what Einstein is supposed to have 

“Insanity is doing the same thing over and over and expecting different 

It just shows that it helps to be a little insane.

Duncan Murdoch

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