# Connect two tables with lines

How can I draw the following in Latex?

I have created the two tables, but I can't figure out how to draw the lines among the cells.

It's possible to reproduce the whole composition with two TiKZ matrices:

\documentclass[border=2mm]{standalone}
\usepackage{tikz}
\usetikzlibrary{matrix, positioning}

\begin{document}
\begin{tikzpicture}[
mycell/.style={draw, minimum size=7mm, fill=gray!30},
matrixA/.style={matrix of nodes,
nodes={mycell, anchor=center},
column sep=-\pgflinewidth,
row sep=-\pgflinewidth,
row 1/.style={nodes={draw=none, fill=none}},
row 2/.style={font=\slshape}},
matrixB/.style={matrix of nodes,
nodes={mycell, anchor=center},
column sep=-\pgflinewidth,
row sep=-\pgflinewidth,
row 3/.style={nodes={draw=none, anchor=base, fill=none}, font=\slshape},
}]

\matrix[matrixA] (A) {
|[label=180:edge]| 0 & 1 & 2 & 3 & 4 & 5 & 6 & 7 & 8 & 9 & 10 & 11 & 12 & 13 & 14 & 15 & 16 & 17 & 18 & 19 & 21 & 21 & 22 & 23\\
|[label={[font=\rmfamily]180:destination}]| b & d & e & a & c & e & b & e & g & a & e & f & a & b & c & d & f & g & d & e & g & c & e & f \\
|[label=180:weight]| 4 & 12 & 9 &  4 & 8 & 7 & 8 & 5 & 2 & 12 & 3 & 6 & 9 & 7 & 5 & 3 & 1 & 13 & 6 & 1 & 11 & 2 & 13 & 11\\};

\matrix[matrixB, below=of A] (B) {
|[label=180:first edge]| 0 & 3 & 6 & 9 & 12 & 18 & 21\\
|[label=180:outdegree]| 3 & 3 & 3 & 3 & 6 & 3 & 3\\
|[label={[font=\rmfamily]180:vertex}]| a & b & c & d & e & f & g\\};

\foreach \i [count=\j] in {1, 4, 7, 10, 12, 18, 21}
\draw (A-3-\i.south west)--(B-1-\j.north west);
\draw (A-3-23.south east)--(B-1-7.north east);

\end{tikzpicture}
\end{document}

• one more question. how can I resize the tikzpicture? I tried to do that with resizebox but it does not work. – Arshak Mehrabyan Jul 26 '16 at 12:04
• @ArshakMehrabyan: If you want to include a tikzpicture (which includes matrix) inside a resizebox command you need to apply ampersand replacement option. See: this answer. A second solution would be to use standalone class to obtain a cropped figure and include it in your text with \includegraphics command. – Ignasi Jul 26 '16 at 12:23
• thank you again @ignasi. I fixed it with ampersand replacement. – Arshak Mehrabyan Jul 26 '16 at 13:27