I have to put big matrices into my thesis and I cannot find a way to do it in a beautiful way. The problem is: these matrices are really sparse but I need them complete for analysis purposes.
So far, I have managed to represent them like this (leaving blank spaces where the value is 0):
The thing is, the matrix is 14×14, but I need the first row/column to show the number 1->14.
Any idea how to improve it while keeping the completeness?
EDIT : Here is the MWE:
\documentclass[11pt,a4paper]{article}
\usepackage{array}
\begin{document}
\begin{table}[!h]
\centering
\begin{tabular}{|c>{\centering\arraybackslash}p{0.5cm}|>{\centering\arraybackslash}p{0.5cm}|>{\centering\arraybackslash}p{0.5cm}|>{\centering\arraybackslash}p{0.5cm}|>{\centering\arraybackslash}p{0.5cm}|>{\centering\arraybackslash}p{0.5cm}|>{\centering\arraybackslash}p{0.5cm}|>{\centering\arraybackslash}p{0.5cm}|>{\centering\arraybackslash}p{0.5cm}|>{\centering\arraybackslash}p{0.7cm}|>{\centering\arraybackslash}p{0.5cm}|>{\centering\arraybackslash}p{0.5cm}|>{\centering\arraybackslash}p{0.5cm}|>{\centering\arraybackslash}p{0.85cm}|}
\hline
{\bfseries SVM} & \multicolumn{1}{|c|}{1} & \multicolumn{1}{c|}{2} & \multicolumn{1}{c|}{3} & \multicolumn{1}{c|}{4} & \multicolumn{1}{c|}{5} & \multicolumn{1}{c|}{6} & \multicolumn{1}{c|}{7} & \multicolumn{1}{c|}{8} & \multicolumn{1}{c|}{9} & \multicolumn{1}{c|}{10} & \multicolumn{1}{c|}{11} & \multicolumn{1}{c|}{12} & \multicolumn{1}{c|}{13} & \multicolumn{1}{c|}{14} \\
\hline
\multicolumn{1}{|c|}{1} & & & & & & & & & & & & & & 2.3 \\
\hline \multicolumn{1}{|c|}{2} & & & & & & & & & & & & & & 0.4 \\
\hline \multicolumn{1}{|c|}{3} & & & & & & & & & & & & & & \\
\hline \multicolumn{1}{|c|}{4} & & & & & & & & & & & & & & 0.2 \\
\hline \multicolumn{1}{|c|}{5} && & & & & & & & 0.7 & & & & & 1.2 \\
\hline \multicolumn{1}{|c|}{6} & & & & & & & & & & & & & & 0.3 \\
\hline \multicolumn{1}{|c|}{7} & & & & & & & & & & & & & & 0.2 \\
\hline \multicolumn{1}{|c|}{8} & & & & & & & & & & & & & & 0.1 \\
\hline \multicolumn{1}{|c|}{9} & & & & & & & & & 3.4 & & & & & 1.5 \\
\hline \multicolumn{1}{|c|}{10} & & & & & & & & & & 11.0 & & & & \\
\hline \multicolumn{1}{|c|}{11} & & & & & & & & & & & & & & 0.1 \\
\hline \multicolumn{1}{|c|}{12} & & & & & & & & & & & & & & 2.6 \\
\hline \multicolumn{1}{|c|}{13} & & & & & & & & & & & & & & 0.1 \\
\hline \multicolumn{1}{|c|}{14} & & & & & & & & & 0.2 & 0.3 & & & & 200.0 \\
\hline
\end{tabular}
\caption{Mean confusion matrices for the first multi-class classification.}
\label{table6}
\end{table}
\end{document}
Best Answer
A couple of possibilities: