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

[Rolf Turner]

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.

cheers,

Rolf

-- 
Honorary Research Fellow
Department of Statistics
University of Auckland
Phone: +64-9-373-7599 ext. 88276