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How do I draw this table? I am not able to place the variables outside the box. Also the the vertical borders are not of same length. So how do I vary the lengths of those vertical lines? enter image description here Secondly is there any simpler code to draw Karnaugh diagrams for 2x2 to 4x4 tables? Here this was described but I find this quite complicated to understand and run. In particular, this picture. No need of coloured text.

Manjoy Das
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1 Answers1

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One solution with matrix of math nodes. matrix of nodes

\documentclass[tikz,border=3.14mm]{standalone}
\usetikzlibrary{matrix}

\begin{document}
    \begin{tikzpicture}
        \matrix(m) [matrix of math nodes, nodes in empty cells, nodes={minimum size=1cm, outer sep=0pt, text height=1.5ex, text depth=.25ex}]
            {
             & b_1 & b'_1 & \
             &    &     & b'_3 \
             &    &     &  \
             &    &     &  \
             &    &     & b'_3 \

            };
        \draw (m-1-1.south east) rectangle (m-5-3.south east);
        \draw (m-1-2.north east) -- (m-5-2.south east);
        \draw (m-2-1.south east) node[left=2.5mm] {$b_2$} -- (m-2-4.south east);
        \draw (m-3-1.south west) -- (m-3-4.south west) node[right=2.5mm] {$b_3$};
        \draw (m-4-1.south east) node[left=2.5mm] {$b'_2$} -- (m-4-4.south east);
    \end{tikzpicture}
\end{document}

I think you may check the NiceTabular package with which you could create some very nicematrix in a nutshell.

SebGlav
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  • with tikz package, I a receiving the error that xstring.sty is not found. – Manjoy Das Apr 24 '21 at 15:56
  • can you plz help me with the table drawing by pointing the directions. I have no idea about south east commands. – Manjoy Das Apr 24 '21 at 15:57
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    When creating a matrix of nodes like this one, you create a table with 5 rows and 4 columns, named (m). Each cell (node) of this matrix is known by (m-row-col), i.e. (m-2-3) means the cell at the 2nd row and the 3rd column. Each cell is a node, so you can call their many anchors (north, south, east, west, etc.) If you want to draw a line above a row, you draw from the above left corner of the first cell to the above right corner of the last one. Hence the (m-5-2.north east)naming. Hope this is clear. – SebGlav Apr 24 '21 at 16:44