generating a table of Figures with labels below the figures

Question

I would like to generate a table of Figures. An excellent example is How to generate a table of figures. Which I have accomplished, however now I would like to add labels below each figure (a), (b)....... so that I can refer to them in the text. This could be accomplished by Insert multiple figures in Latex, however, in my case I would like the x labels and y labels to be present (as shown in the figure below). Additionally, I would like the y axis labels to be rotated 90 degrees.

Answer 1

For sub captions you can use subfloat environment as defined in subfig or in subcaption version 2.3 package. For rotating of contents in the first row can be used rotating and makecell packages, for table is handy to use (new) tabularray package.

In MWE are for images used example-image-duck provided in the graphicx package:

\documentclass[a4paper]{article}
\usepackage{caption}
\usepackage{subcaption} % version 1.3
\usepackage{graphicx}
\usepackage{xcolor}
\usepackage{rotating}

\usepackage{makecell}

\usepackage{tabularray}
\UseTblrLibrary{booktabs, counter, varwidth}
\begin{document}
    \begin{table}
    \centering
    \setkeys{Gin}{width=\linewidth}
    \settowidth\rotheadsize{PARAMETERS 3}    % from makecell
\begin{tblr}{colspec = { Q[h] *{4}{Q[c,m, wd=35mm]}},
             colsep  = 3pt,
             cell{2-Z}{1} = {cmd=\rotcell, font=\footnotesize\bfseries},
             row{1} = {font=\bfseries},
             measure=vbox
            }
    \toprule
Nr. & Case 1    & Case 2    & Case 3    & Case 4    \
    \midrule
PARAMETERS 1
    & \subfloat[]{\includegraphics{example-image-duck}}
        & \subfloat[]{\includegraphics{example-image-duck}}
            & \subfloat[]{\includegraphics{example-image-duck}}
                & \subfloat[]{\includegraphics{example-image-duck}}     \
PARAMETERS 2
    & \subfloat[]{\includegraphics{example-image-duck}}
        & \subfloat[]{\includegraphics{example-image-duck}}
            & \subfloat[]{\includegraphics{example-image-duck}}
                & \subfloat[]{\includegraphics{example-image-duck}}     \
PARAMETERS 3
    & \subfloat[]{\includegraphics{example-image-duck}}
        & \subfloat[]{\includegraphics{example-image-duck}}
            & \subfloat[]{\includegraphics{example-image-duck}}
                & \subfloat[]{\includegraphics{example-image-duck}}     \
    \bottomrule
\end{tblr}
\caption{Table of figures}
\label{tbl:table_of_figures}
    \end{table}
\end{document}

Answer 2

Table taken from the accepted answer here:

You need \usepackage{caption} and can use \caption*{...}

\documentclass[a4paper,10pt]{article}
\usepackage{array}
\usepackage{booktabs}
\usepackage[dvipsnames]{xcolor}
\usepackage{tikz}
\usepackage{caption}
\newcommand{\dummyfigure}{\tikz \fill [NavyBlue] (0,0) rectangle node [black] {Figure} (2,2);}
\newcolumntype{M}[1]{>{\centering\arraybackslash}m{#1}}
\begin{document}
    \begin{table}
        \centering
        \begin{tabular}{cM{20mm}M{20mm}M{20mm}M{20mm}}
            \toprule
            Nr. & Case 1 & Case 2 & Case 3 & Case 4 \
            \midrule
            \rotatebox[origin=c]{90}{Parameter 1} & \dummyfigure \caption{(a)}\label{a} & \dummyfigure \caption{(b)}\label{b} & \dummyfigure  \caption{(c)}\label{c}& \dummyfigure \caption{(d)}\label{d}\
            \rotatebox[origin=c]{90}{Parameter 2} & \dummyfigure \caption{(e)}\label{e} & \dummyfigure \caption{(f)}\label{f} & \dummyfigure \caption{(g)}\label{g} & \dummyfigure \caption{(h)}\label{h} \
            \rotatebox[origin=c]{90}{Parameter 3} & \dummyfigure \caption{(i)}\label{i} & \dummyfigure \caption{(j)}\label{j} & \dummyfigure \caption{(k)}\label{k} & \dummyfigure \caption{(l)}\label{l}\
            \bottomrule
        \end{tabular}
        \caption{Table of figures}
        \label{tbl:table_of_figures}
    \end{table}
\end{document}