tikz-matrixtikz-pgf
I want to draw a TikZ matrix with its border and I would like to define the distance between most external matrix nodes and matrix border. Something like a matrix inner sep. If I change inner sep in matrix options declaration, all nodes inside the matrix also change its inner separation.
I know how to do it with fit library. I just want to know if its possible without it.
You are loading the positioning library but then use below of=...,
however the library provides the syntax below=<optional length> of ..., while
below of is already provided by the TikZ core.
Try something like this instead:
\documentclass{article}
\usepackage{tikz}
\usetikzlibrary{positioning}
\begin{document}
\begin{tikzpicture}
\node (a) {A};
\node [below=1cm of a] (b) {B};
\draw (a.north west) rectangle (a.south east);
\draw (b.north west) rectangle (b.south east);
\end{tikzpicture}
\end{document}
You can customise the distance between columns when you're writing the first row of your matrix. For example
\documentclass{article}
\usepackage{tikz}
\usetikzlibrary{matrix}
\begin{document}
\begin{tikzpicture}
\matrix [matrix of nodes,row sep=-\pgflinewidth,nodes={rectangle,draw,minimum width=3em}]
{
0 &[-\pgflinewidth] 3 &[5mm] 6 \\
1 & 1 & 3 \\
2 & 2 & 9 \\
};
\end{tikzpicture}
\end{document}
gets you this:
Note that I have used the answer from the question linked in this question as a template, but I've kept it simple to highlight the column separations.
Best Answer
The
inner sepfor the matrix can be set and thennodes={inner sep=...}can be reset individually for the inner nodes.