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I am using revtex4-1 for a Physical Review Letter. Typically when a figure is made, the caption starts out FIG. 1. <text>. I am creating a supplementary file and I would like it to say FIG. S1. <text>. How can I change that?

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have you seen how-to-change-the-numbering-for-different-figures – cmhughes Feb 10 '12 at 16:32
up vote 9 down vote accepted

A global modification to \thefigure of the form


would suffice (in your document preamble). Alternatively, if you only want to modify the figure number representation in the caption only (since you might not be referencing it as part of "supplementary figures"), you could use


The former is preferred, since it makes more sense.

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@egreg i would like to add some color in the figure's label, but i want the color also applied in the colon that is added automatically after the figure number, and is appearing black, \renewcommand{\thefigure}{\textbf{\thechapter.\arabic{figure}}} \renewcommand{\figurename}{\color{magenta} \textbf{Figure}} i am using memoir class – Sofia Mouseti May 7 '15 at 8:55
@SofiaMouseti Please ask a new question. – egreg May 7 '15 at 9:02

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