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How to make exponents superscripted on plots instead of with e notation?

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zero1342
zero1342 on 1 Jul 2015
Edited: Muthu Annamalai on 23 Jul 2015
I am displaying a variable in the title of a plot but I would like it to show with the exponent part superscripted instead of in the e notation. For example:
n0=10^25
plot(...)
title('n0')
This displays n0 as 1.0e+25 in the title instead of the 25 superscripted. Is there a way to do this in MATLAB without having to manually type a new string into the title every time?
I don't want to have to do this:
title('10^{25}')
Thanks for any help.

Accepted Answer

zero1342
zero1342 on 1 Jul 2015
ANSWER:
exponent = floor(log10(n0));
title(sprintf('n_{0} = %.2f x 10^{%d}',n0/10^exponent,exponent))

More Answers (1)

Muthu Annamalai
Muthu Annamalai on 1 Jul 2015
Whereas some options may exist, a simple work around does the trick following your hint;
var2exp = @( varname, var ) [regexprep(sprintf('%s=%g',varname,var),'[e|E]','^{'),'}']
title(var2exp('n0',n0))
this is admittedly kludgy, but seems to suit your needs.
  2 Comments
Muthu Annamalai
Muthu Annamalai on 23 Jul 2015
I'm not so sure.
Whereas my code will work for -ve numbers, your code may fail, and badly at that with some complex output for log10 of a 0 or -ve number.

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