When using tikz to draw lines with the remember picture argument, is there a way to set the coordinates based on the height or width of the picture? For example, in the code below
\draw [-stealth, ultra thick,] ($(image1.south)+(0,0)$)--($(bar1.west)+(1,0)$);
how can I set the +(1,0)
to something like (0.2*bar1.width,0)
if I want the line to end at 20% of bar1's width?
MWE
\documentclass{article}
\usepackage[utf8]{inputenc}
\usepackage{tikz}
\usepackage{float}
\usepackage{subfig}
\usetikzlibrary{calc}
\usepackage{graphicx}
\begin{document}
\begin{figure*}
\centering
\subfloat{
\begin{tikzpicture}
\node[anchor=south west,inner sep=0] (image) at (0,0) {\includegraphics[width=0.15\textwidth,trim={0 0 0 0},clip]{example-image-a}};
\end{tikzpicture}}\hspace{-0.2em}
\subfloat{
\begin{tikzpicture}
\node[anchor=south west,inner sep=0] (image) at (0,0) {\includegraphics[width=0.15\textwidth,trim={0 0 0 0},clip]{example-image-a}};
\end{tikzpicture}}\hspace{-0.2em}
\subfloat{
\begin{tikzpicture}
\node[anchor=south west,inner sep=0] (image) at (0,0) {\includegraphics[width=0.15\textwidth,trim={0 0 0 0},clip]{example-image-a}};
\end{tikzpicture}}\hspace{-0.2em}
\subfloat{
\begin{tikzpicture}
\node[anchor=south west,inner sep=0] (image) at (0,0) {\includegraphics[width=0.15\textwidth,trim={0 0 0 0},clip]{example-image-a}};
\end{tikzpicture}}\hspace{-0.2em}
\subfloat{
\begin{tikzpicture}
\node[anchor=south west,inner sep=0] (image) at (0,0) {\includegraphics[width=0.15\textwidth,trim={0 0 0 0},clip]{example-image-a}};
\end{tikzpicture}}\hspace{-0.2em}
\subfloat{
\begin{tikzpicture}
\node[anchor=south west,inner sep=0] (image) at (0,0) {\includegraphics[width=0.15\textwidth,trim={0 0 0 0},clip]{example-image-a}};
\end{tikzpicture}}
\subfloat{
\begin{tikzpicture}[remember picture]
\node[inner sep=0] (image1) at (0,0) {\includegraphics[width=0.15\textwidth,trim={0 0 0 0},clip]{example-image-b}};
\end{tikzpicture}}\hspace{-0.2em}
\subfloat{
\begin{tikzpicture}[remember picture]
\node[inner sep=0] (image) at (0,0) {\includegraphics[width=0.15\textwidth,trim={0 0 0 0},clip]{example-image-a}};
\end{tikzpicture}}\hspace{-0.2em}
\subfloat{
\begin{tikzpicture}[remember picture]
\node[inner sep=0] (image) at (0,0) {\includegraphics[width=0.15\textwidth,trim={0 0 0 0},clip]{example-image-a}};
\end{tikzpicture}}\hspace{-0.2em}
\subfloat{
\begin{tikzpicture}[remember picture]
\node[inner sep=0] (image) at (0,0) {\includegraphics[width=0.15\textwidth,trim={0 0 0 0},clip]{example-image-a}};
\end{tikzpicture}}\hspace{-0.2em}
\subfloat{
\begin{tikzpicture}[remember picture]
\node[inner sep=0] (image) at (0,0) {\includegraphics[width=0.15\textwidth,trim={0 0 0 0},clip]{example-image-a}};
\end{tikzpicture}}\hspace{-0.2em}
\subfloat{
\begin{tikzpicture}[remember picture]
\node[inner sep=0] (image) at (0,0) {\includegraphics[width=0.15\textwidth,trim={0 0 0 0},clip]{example-image-a}};
\end{tikzpicture}}
\noindent\begin{tabular}{@{}rl}
True Left &
\begin{tikzpicture}[remember picture]
\node[anchor=south west,inner sep=0] (bar1) at (0,0) {\includegraphics[width=0.85\textwidth,height=0.02\textwidth,trim={0 0 0 0},clip]{example-image-a}};
\end{tikzpicture}\\
Pred Left &\includegraphics[width=0.85\textwidth,height=0.02\textwidth,trim={0 0 0 0},clip]{example-image-a}\\
True Right &\includegraphics[width=0.85\textwidth,height=0.02\textwidth,trim={0 0 0 0},clip]{example-image-a}\\
Pred Right &\includegraphics[width=0.85\textwidth,height=0.02\textwidth,trim={0 0 0 0},clip]{example-image-a}\\
\end{tabular}
\begin{tikzpicture}[overlay,remember picture]
\begin{scope}
\draw [-stealth, ultra thick,] ($(image1.south)+(0,0)$)--($(bar1.west)+(1,0)$);
\end{scope}
\end{tikzpicture}
\caption{}
\label{fig:qualitative-mocap}
\end{figure*}
\end{document}