exp2text

Converts exponential format to TeX format for annotating plots

This should be a useful small function for anyone who doesn't like the classic "scientific notation" format and would like to have a more compact notation for their plots.
With exp2text you can convert any real or complex number to an appropriate exponential format using multiples of a power of 10 in a *10^ form instead of the classic 'E' exponential notation (see screenshot)

Number of desired significant digits can also be included as a parameter (default is 3)

Example shown in screenshot:

x=0.0014982; % Real Number Example
y=0.1341+0.325i; % Complex Number Example
figure
text(0.1,0.95,['\bf{Real Numbers:}'])
text(0.1,0.9,['Simple num2str: ',num2str(x)])
text(0.1,0.85,['Simple exp format: ',num2str(x,'%.3e')])
text(0.1,0.75,['exp2text: ',exp2text(x)])
text(0.1,0.55,['\bf{Complex Numbers:}'])
text(0.1,0.5,['Simple num2str: ',num2str(y)])
text(0.1,0.45,['Simple exp format: ',num2str(y,'%.3e')])
text(0.1,0.35,['exp2text: ',exp2text(y)])