Changing the format of figure, algorithm and equation numbering

Question

This is a follow-up to this question. That allowed me to format references to an equation/figure/algorithm so that they started with an 'S'. What if I want to change the format in the original equation/figure/algorithm? For instance, if I entered

\begin{equation}
a=b
\label{eq:myeq}
\end{equation}

How would I get it to show up in the final document as:

a=b (S1)

Instead of:

a=b (1)

?

No, that mostly answers it, but equations are still being indexed from 0 instead of 1 for some reason. — David P, May 07 '13 at 21:02
Would you be able to create a minimal working example (MWE)? The default behaviour would be to start the numbering of equations at 1, not 0. — Werner, May 07 '13 at 21:18
Found my error, explained in the comments for the answer below. Given this answer is the same as the link from @cmhughes, should this question be removed? — David P, May 07 '13 at 21:40

Przemysław Scherwentke · Accepted Answer · 2013-05-07T21:13:19.520

3

\def\theequation{S\arabic{equation}}

I assume that you use it in article. Definition for report or book should be a bit modified.

MWE:

\documentclass{article}
\begin{document}

\def\theequation{S\arabic{equation}}

\begin{equation}
2+2=4
\end{equation}


\end{document}

enter image description here

edited May 07 '13 at 21:13

answered May 07 '13 at 20:54

Przemysław Scherwentke

37,268

Changing the format of figure, algorithm and equation numbering

1 Answers1