# How to use arrows to separate rows or columns of a table

How can I use an arrow as a substitute for \hline to create the appearance of an $x$ axis in a table? How would one add an axis name to this line? How do I create a similar feature for the vertical separator line? What can I use instead of say c|c to make a vertical axis and add a name as in $t$ at the end of arrow?

EDIT

Here is an MWE of a basic table, I want the horizontal separator to be replaced by an arrow, with a $t$, to represent the $t$-axis. And the vertical separator to be replaced with an arrow pointing downward, showing $x$ to represent the $x$ axis. Due to large size of my table there is no room for additional lines to box the table.

\documentclass{article}
\usepackage{diagbox}
\begin{document}
\begin{table}
\begin{center}
\begin{tabular}{c | c c c c c c}
\diagbox{$i$}{$j$} & $0$ & $1$ & $2$ & $3$  &  $4$  &  $5$  \\
\hline
-2& .& .&. &. & . & . \\
-1& .& .&. &. & . & . \\
0& .& .&. &. & . & . \\
1& .& .&. &. & . & . \\
2& .& .&. &. & . & . \\
3& .& .&. &. & . & . \\
\end{tabular}
\end{center}
\end{table}
\end{document}

• What's your final aim? To create an axis system with a table in it? There may be simpler ways... – TeXnician Aug 27 '17 at 16:55
• @TeXnician I have two lines; one at the top and one at the left that separate time and space values from the numbers in the body of table. I just want to emphasize on table that time is horizontal and space is vertical pointing down. – Maesumi Aug 27 '17 at 17:11

Just a simple solution using a TikZ matrix (not fully optimal):

\documentclass{article}
\usepackage{tikz}
\usetikzlibrary{matrix}
\begin{document}
\begin{tikzpicture}
\matrix (f) [matrix of nodes,row sep=-\pgflinewidth,column 1/.style={nodes={rectangle,draw,minimum width=3em}},column 2/.style={nodes={rectangle,draw,minimum width=3em}}]
{
0   & 6 \\
1   & 3 \\
1   & 3 \\
};
\draw[->] (f.north west) -- (f.north east) node[midway,above] {Time};
\draw[->] (f.north west) -- (f.south west) node[midway,left] {Space};
\end{tikzpicture}
\end{document}


A solution with an ordinary array and pst-node (+ auto-pst-pdf to compile with pdflatex -shell-escape):

\documentclass{article}
\usepackage[utf8]{inputenc}
\usepackage{array}
\usepackage{pst-node, auto-pst-pdf}

\begin{document}

$\begin{pspicture} \begin{array}{|c|c|} \hline \pnode[-1em, 3ex]{O}0 & 6 \pnode[1em, 3ex]{X} \\ \hline 1 & 3 \\ \hline \pnode[-1em, -2ex]{Y}1 & 3 \\ \hline \end{array}\everypsbox{\footnotesize} \psset{linewidth=0.5pt, linejoin=1, arrows= <->, arrowinset=0.12, labelsep=2pt} \psline(X)(O)(Y)\uput[r](X){t} \psset{linestyle=none, arrows =-, shortput=nab} \ncline{O}{X}^{Time} \ncline{O}{Y}_[nrot=:U]{Space} \end{pspicture}$

\end{document}


• I get Package ifplatform Warning: shell escape is disabled, so I can only detect \ifwindows. ) ! Package auto-pst-pdf Error: "shell escape" (or "write18") is not enabled: auto-pst-pdf will not work! . See the auto-pst-pdf package documentation for explanation. Type H <return> for immediate help. ... l.134 Or turn off auto-pst-pdf.} % ? – Maesumi Aug 28 '17 at 23:56
• Yes, you ghave to add this switch to compile with pdflatex. Other solution: remove aut-pst-pdf and compile with xelatex. – Bernard Aug 29 '17 at 0:07