have the caption of a figure overlaping the figure (floatrow)

Question

i try to overlap the caption of a figure with the figure itself as shown in the picture:

the picture is only mockup of what i want to achieve. i use the following code to insert the image and caption and i have the floatrow package included:

{\floatsetup{capposition=beside,capbesideposition={bottom,right}}
\begin{figure}[h]
    \includegraphics[width=0.4\textwidth]{experimental/ec-cell-schematic}
    \caption{Schematic of the single compartiment cell used for the electrochemical measurements.\\a) Reference electrode\\b) Counter electrode\\c) RDE Shaft / holder\\d) GC-RDE tip (black square)\\e) Gas overflow inlet\\f) Gas tube with frit for saturation}
    \label{fig:ec-cell-schematic}
\end{figure}}

is this possible to achieve? i am thinking about maybe negative margins or something along those lines but i have no idea where to start with that...

---

As requested:

Full working code:

\documentclass[12pt,twoside]{report}
\usepackage[utf8]{inputenc}
\usepackage{graphicx}
\usepackage{caption}
\usepackage{floatrow}


\begin{document}

{\floatsetup{capposition=beside,capbesideposition={bottom,right}}
\begin{figure}[H]
    \includegraphics[width=0.4\textwidth]{ec-cell-schematic}
    \caption{Schematic of the single compartiment cell used for the electrochemical measurements.\\a) Reference electrode\\b) Counter electrode\\c) RDE Shaft / holder\\d) GC-RDE tip (black square)\\e) Gas overflow inlet\\f) Gas tube with frit for saturation}
\end{figure}}

{\floatsetup{capposition=beside,capbesideposition={bottom,right}}
\begin{figure}[H]
    \includegraphics[width=0.4\textwidth]{ec-cell-schematic-additionalcontent}
    \caption{Schematic of the single compartiment cell used for the electrochemical measurements.\\a) Reference electrode\\b) Counter electrode\\c) RDE Shaft / holder\\d) GC-RDE tip (black square)\\e) Gas overflow inlet\\f) Gas tube with frit for saturation}
\end{figure}}

\end{document}

and the two images, one being wider and having a textbox where the additional content will be (the final graphic is not done yet and depends on the outcome of this)

i.stack.imgur.com/mFvjj.png

i.stack.imgur.com/GGVaV.png

(posting the links in plain text because i have not enough reputation to post more than two links... this seems a little bit too restrictive IMO but hey...)

Answer 1

The solution is simple: scale your figures instead of adjusting their widths. As the figures did not have the same width, adjusting them to the same width induced different scalings. So use the same scaling for both figures (it seems to be ~ 0.25), then fool LaTeX putting them in a box of width 0.4\textwidth:

\documentclass[12pt,twoside]{report}
\usepackage[utf8]{inputenc}
\usepackage{graphicx}
\usepackage{caption}
\usepackage{floatrow}

\begin{document}

{\floatsetup{capposition=beside,capbesideposition={bottom,right}}
\begin{figure}[H]
    \makebox[0.4\textwidth][l]{\includegraphics[scale=0.25]{ec-cell-schematic}}
    \caption{Schematic of the single compartiment cell used for the electrochemical measurements.\\a) Reference electrode\\b) Counter electrode\\c) RDE Shaft / holder\\d) GC-RDE tip (black square)\\e) Gas overflow inlet\\f) Gas tube with frit for saturation}
\end{figure}}

{\floatsetup{capposition=beside,capbesideposition={bottom,right}}
\begin{figure}[H]
    \makebox[0.4\textwidth][l]{\includegraphics[scale = 0.25]{ec-cell-schematic-additionalcontent}}
    \caption{Schematic of the single compartiment cell used for the electrochemical measurements.\\a) Reference electrode\\b) Counter electrode\\c) RDE Shaft / holder\\d) GC-RDE tip (black square)\\e) Gas overflow inlet\\f) Gas tube with frit for saturation}
\end{figure}}

\end{document}