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What is the simplest script to create something similar to this table?

enter image description here

Edit: Thanks for the help so far. I apologize I have not included example. I am familiar with creating tables in table and tabular environments. Also one of the comments addressed the addition of the diagonal line. The only thing that I am not sure of is how to combine four subtables into one. Is there a previous answer in this site that address that?

Rudinberry
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    Do you have any starting code? – Paul A Jul 26 '22 at 12:40
  • If you decide on using regular tabular environment, you need a few packages for that: booktabs for custom horizontal rules, makecell to add diagonal rules. For custom vertical lines see this answer. Additionally, use multicolumn to merge adjacent cells in a row. Otherwise have a look at tabularray, which is a relatively new package but has very intuitive interface. Beware you will need to manually add it to Overleaf. – Celdor Jul 26 '22 at 13:06
  • Welcome to TeX.SX! On this site, a question should typically revolve around an abstract issue (e.g. "How do I get a double horizontal line in a table?") rather than a concrete application (e.g. "How do I make this table?"). Questions that look like "Please do this complicated thing for me" tend to get closed because they are either "off topic", "too broad", or "unclear". Please try to make your question clear and simple by giving a minimal working example (MWE): you'll stand a greater chance of getting help. – Stefan Pinnow Jul 26 '22 at 13:31
  • Is https://tex.stackexchange.com/questions/17745/diagonal-lines-in-table-cell what you are looking for? – samcarter_is_at_topanswers.xyz Jul 26 '22 at 13:46
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    Instead of apologizing for not including example code, it would be better to include the example code. – Teepeemm Jul 26 '22 at 14:17
  • You can either just use one large tabluar or you can try to arrange four tabular environments (see https://tex.stackexchange.com/q/2832/47927 ). However, if you want to arrange multiple tables, note that there is a caption spanning over two subtables ("Error"). – Jasper Habicht Jul 26 '22 at 14:37

1 Answers1

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Could this be a start for you:

\documentclass{scrartcl}

\usepackage{makecell}
\usepackage{multirow}


\begin{document}


\begin{table}
\centering


\begin{tabular}{|ccccccc|}


\hline
\multicolumn{7}{|c|}{Error}\
\hline
&
\multicolumn{5}{c}{DIRK(5,5)}\
\hline
\diaghead(-2,1){|ccccccc|}%
{g}{h}&
0.1&& 0.01& 0.001& 0.0001& 0.00001\
\hline
1 && 0 & 0 & 0 & 0\ & 0\
10 && 0 & 0 & 0 & 0\ & 0\
100 && 0 & 0 & 0 & 0\ & 0\
1000 && 0 & 0 & 0 & 0\ & 0\
10000 && 0 & 0 & 0 & 0\ & 0\
\hline


\hline
&
\multicolumn{5}{c}{DIRK(9,7)}\
\hline
\diaghead(-2,1){|ccccccc|}%
{g}{h}&
0.1&& 0.01& 0.001& 0.0001& 0.00001\
\hline
1 && 0 & 0 & 0 & 0\ & 0\
10 && 0 & 0 & 0 & 0\ & 0\
100 && 0 & 0 & 0 & 0\ & 0\
1000 && 0 & 0 & 0 & 0\ & 0\
\hline


\end{tabular}
\end{table}
\end{document}
Paul A
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