R help - Aug 2012 - Inserting superscripts in free-format text line

I would like to insert a superscript in a body of text (e.g., a title or  
axis label), where the superscript is not necessarily at the end of the  
text.  For example, suppose a title read, "This is a Test^1 of the  
Emergency Broadcast System" where there is a superscript 1 after the word  
Test.

As a starting point for what I'm trying to do, the following shows a  
superscript:
x=10
plot(x)
text(x=1, y=12, expression("test"^1)

But, the following does not show a superscript:
x=10
plot(x)
text(x=1, y=11, paste("This is a", expression("test"^1),
"of the Emergency
Broadcast System.")

Thanks in advance to all those who reply.

Best,
Brian Kriegler
bkriegler39 at gmail.com
--

On Aug 20, 2012, at 11:35 AM, Brian Kriegler wrote:
> I would like to insert a superscript in a body of text (e.g., a  
> title or axis label), where the superscript is not necessarily at  
> the end of the text.  For example, suppose a title read, "This is a  
> Test^1 of the Emergency Broadcast System" where there is a  
> superscript 1 after the word Test.
>
> As a starting point for what I'm trying to do, the following shows a  
> superscript:
> x=10
> plot(x)
> text(x=1, y=12, expression("test"^1)
Not on my device. No closing paren.

Why not:

plot(1:10)
text(x=5, y=4.5, expression(test^1) )

You do not need quotes in plotmath expressions unless they are  
reserved plotmath function names. People reach for paste() in far too  
many situations.
>
> But, the following does not show a superscript:
> x=10
> plot(x)
> text(x=1, y=11, paste("This is a",
expression("test"^1), "of the
> Emergency Broadcast System.")
And why not:

  expression(This~is~a~test^1~of~the~Emergency~Broadcast~System.)
>
-- 

David Winsemius, MD
Alameda, CA, USA