I have arranged 4 plots using tabular. Now I try to decrease the space between the rows to move the plots and the labels closer together.
In another post (Column and row padding in tables) I read I should use
{\renewcommand{\arraystretch}{1}%
However this is only working to a fixed lower bound (0.5 or something). I would like to decrease the space even more.
Here is a simplified example:
\documentclass[]{article}
\usepackage{graphicx}
\usepackage{tikz}
\begin{document}
\begin{figure}
\small
\begin{tabular}{cc}
\input{top_left_figure.tex} & \input{top_right_figure.tex} \\
(a) Sub figure 1 & (b) Sub figure 2 \\
\input{bottom_left_figure.tex} & \input{bottom_right_figure.tex} \\
(c) Sub figure 3 & (d) Sub figure 4
\end{tabular}
\caption{My title}
\end{figure}
\end{document}

\\[<len>]where you specify the length<len>. For example,\\[-10pt]. – Werner Jun 28 '16 at 20:11