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Superscript number before letter

6 messages · Janhal, Richard M. Heiberger, David Winsemius

#
Salut,
I have been struggling to superscript the 18 before the O without ^ visible
and found only help to superscript numbers after the letter. Thanks to
anyone who can help.
xlab=expression(delta*18O VSMOW [?]")
Cheers,
Janine

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#
On May 4, 2011, at 7:28 AM, Richard M. Heiberger wrote:

            
I do not think that is necessary:

plot(1:10, xlab=expression(delta^18*O~VSMOW["?"]))

(I wasn't sure if the [.] operation was supposed to be a subscript.)

I generally avoid spaces in plotmath expressions and use tildes "~" to  
accomplish any needed spaces. The asterisk "*" is the non-spacing  
separator between elements.
David Winsemius, MD
Heritage Laboratories
West Hartford, CT