I would like to have something like this:
[Tex/LaTex] How to insert the figure inside text without caption and label in LaTeX
floatspdftex
Related Solutions
A global modification to \thefigure of the form
\renewcommand{\thefigure}{S\arabic{figure}}
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
\makeatletter
\renewcommand{\fnum@figure}{\figurename~S\thefigure}
\makeatother
The former is preferred, since it makes more sense.
You can use the caption package to set up a style, lets call it overlay that saves the caption for use later. Here is an example:
EDIT example technique slightly change, example extended, now working with hyperref
\documentclass{article}
\usepackage{tikz,caption}
\usepackage{hyperref}
\usetikzlibrary{calc}
\DeclareCaptionFormat{overlay}{\gdef\capoverlay{#1#2#3\par}}
\DeclareCaptionStyle{overlay}{format=overlay}
\begin{document}
\begin{figure}[htp]
\centering
\captionsetup{format=overlay}
\caption{Example.}
\begin{tikzpicture}
\node[anchor=south west,inner sep=0] (image) at (0,0)
{\includegraphics[width=\linewidth]{example-image-a}};
\begin{scope}[x={(image.south east)},y={(image.north west)}]
\draw[white, fill=gray,opacity=0.5] (0,0) rectangle (1,0.15);
\draw let \p1 = (1,0)
in node[opacity=0.5,text width=\x1,align=center,color=white] at
(0.5, 0.075)
{\capoverlay};
\end{scope}
\end{tikzpicture}
\label{fig:example}
\end{figure}
\begin{figure}[htp]
\centering
\includegraphics[width=3cm]{example-image-a}
\caption{Non-overlay example}
\label{fig:non}
\end{figure}
\begin{figure}[htp]
\centering
\captionsetup{format=overlay}
\caption{Example with caption overlay and long placed on a smaller figure.}
\begin{tikzpicture}
\node[anchor=south west,inner sep=0] (image) at (0,0)
{\includegraphics[width=0.7\linewidth]{example-image-a}};
\begin{scope}[x={(image.south east)},y={(image.north west)}]
\draw[white, fill=gray,opacity=0.5] (0,0) rectangle (1,0.15);
\draw let \p1 = (1,0)
in node[opacity=0.5,text width=\x1,align=center,color=blue] at
(0.5, 0.075)
{\capoverlay};
\end{scope}
\end{tikzpicture}
\label{fig:example2}
\end{figure}
A reference to Figure~\ref{fig:example} and to Figure~\ref{fig:example2}.
\listoffigures
\end{document}
Note this needs the caption to come before the tikz code. It formats the caption, saves it in a command and reuses that command in the code of the linked question to place text on top of the figure. As set-up now this works with hyperref and does not affect other figures. You can change the formatting of the caption via standard tikz commands on the node.
Best Answer
Like this?