Problem with multirow and multicolumn in LaTeX

Question

I have a problem with the creation of a table on LaTex while using multicolumn and multirow. Here the code that I'm using

\documentclass[12 pt, letterpaper, twoside, openright]{book}

\usepackage{amsmath} 

\usepackage{multirow} 

\usepackage{enumitem}
\usepackage{booktabs, makecell, longtable}
\usepackage{stackengine}
\usepackage{tabularx}
\usepackage{caption}
\usepackage{subcaption}

\usepackage[super]{nth} 

\usepackage{array}
\newcolumntype{P}[1]{>{\centering\arraybackslash}p{#1}}
\usepackage[table]{xcolor}
%http://latexcolor.com/
\definecolor{amber}{rgb}{1.0, 0.75, 0.0} %giallo ocra

\begin{document}

\begin{table}[!b]
\centering
  \begin{tabular}{l|ccc|ccc|ccc}
    \multirow{2}{*}{Periods and Hours} &
      \multicolumn{3}{|c|}{\cellcolor{amber}Total} &
      \multicolumn{3}{|c|}{\cellcolor{amber}First period} &
      \multicolumn{3}{|c}{\cellcolor{amber}Second Period} \\[0.5ex]
      & \cellcolor{amber}hypo & \cellcolor{amber}\cellcolor{amber}normo & \cellcolor{amber}hyper& \cellcolor{amber}hypo & \cellcolor{amber}normo & \cellcolor{amber}hyper& \cellcolor{amber}hypo & \cellcolor{amber}normo & \cellcolor{amber}hyper\\[0.5ex]
    \hline
     \multirow{2}{3em} TIR (\%) PP1 & 54,02 & 14,59 & 31,38 &48,7 &9,48&41,77&59,9&20,29&19,8\\
      Hour(h) & 57 & 15 & 33 &27 &5&23&30&10 &10\\
      \hline
  \end{tabular}
\end{table}

\end{document}

and this is the output

I don't know why the TIR and Hours is so mess up. Please help me :(

Don't bother with `\multirow` and `\multicolumn`. Have a look at the `tabularray` package instead. It makes merging cells soooooooooo much easier — samcarter_is_at_topanswers.xyz, Jul 04 '22 at 08:52
... that being said, please make a compilable [mre] instead of just a code fragment — samcarter_is_at_topanswers.xyz, Jul 04 '22 at 08:53
Your syntax is wrong, you are missing the `{...}` around the final argument — samcarter_is_at_topanswers.xyz, Jul 04 '22 at 08:54
This code won't compile. No documenctclass, not the necessary packages, no`document` environment.... — samcarter_is_at_topanswers.xyz, Jul 04 '22 at 15:51
Did you actually test the code from your question to make sure it compiles? — samcarter_is_at_topanswers.xyz, Jul 04 '22 at 16:19
@samcarter_is_at_topanswers.xyz yep, same problem as the one in the picture — sara camp, Jul 04 '22 at 16:29
Definitely not. It will error much earlier with `\usepackage before \documentclass. ` as error message. — samcarter_is_at_topanswers.xyz, Jul 04 '22 at 16:30
In my latex file they are in the correct order, I wrote it here wrongly.. despite this and the use of \tabularray, do you know what can cause my problem? — sara camp, Jul 04 '22 at 16:34
Please do write it here correctly. Also add the other missing bits like how your `S` and `s` columns are defined so we can compile your example and the work on a solution. — samcarter_is_at_topanswers.xyz, Jul 04 '22 at 16:38
@samcarter_is_at_topanswers.xyz modified with all your requirements — sara camp, Jul 04 '22 at 17:23

samcarter_is_at_topanswers.xyz · Accepted Answer · 2022-07-04T19:36:58.897

The syntax \multirow{2}{3em} TIR (\%) PP1 is wrong. \multirow has 3 mandatory arguments, the last one the content of the cell. So if you actually want to merge two cells, you need \multirow{2}{3em}{ TIR (\%) PP1} (notice the {...} around the cell content)

... that being said, the cell below this is already filled with Hour(h). If you want the cell above to be merged with this one, you have to leave it empty.

\documentclass[12 pt, letterpaper, twoside, openright]{book}

\usepackage{amsmath} 

\usepackage{multirow} 

\usepackage{enumitem}
\usepackage{booktabs, makecell, longtable}
\usepackage{stackengine}
\usepackage{tabularx}
\usepackage{caption}
\usepackage{subcaption}

\usepackage[super]{nth} 

\usepackage{array}
\newcolumntype{P}[1]{>{\centering\arraybackslash}p{#1}}
\usepackage[table]{xcolor}
%http://latexcolor.com/
\definecolor{amber}{rgb}{1.0, 0.75, 0.0} %giallo ocra

\begin{document}

\begin{table}[!b]
\centering
  \begin{tabular}{l|ccc|ccc|ccc}
    \multirow{2}{*}{Periods and Hours} &
      \multicolumn{3}{|c|}{\cellcolor{amber}Total} &
      \multicolumn{3}{|c|}{\cellcolor{amber}First period} &
      \multicolumn{3}{|c}{\cellcolor{amber}Second Period} \\[0.5ex]
      & \cellcolor{amber}hypo & \cellcolor{amber}\cellcolor{amber}normo & \cellcolor{amber}hyper& \cellcolor{amber}hypo & \cellcolor{amber}normo & \cellcolor{amber}hyper& \cellcolor{amber}hypo & \cellcolor{amber}normo & \cellcolor{amber}hyper\\[0.5ex]
    \hline
%     \multirow{2}{3em}
     TIR (\%) PP1 & 54,02 & 14,59 & 31,38 &48,7 &9,48&41,77&59,9&20,29&19,8\\
      Hour(h) & 57 & 15 & 33 &27 &5&23&30&10 &10\\
      \hline
  \end{tabular}
\end{table}

\end{document}

Personally, I would use the tabularray package, this makes merging cells so much easier:

\documentclass{book}

\usepackage{xcolor}
\definecolor{amber}{rgb}{1.0, 0.75, 0.0} %giallo ocra
\usepackage{tabularray}

\begin{document}

\begin{table}[htbp]
  \begin{tblr}{
    colspec={l|ccc|ccc|ccc},
    cell{1-2}{2-10} = {amber}
  }
    \SetCell[r=2]{} Periods and Hours &
    \SetCell[c=3]{} Total & & & 
    \SetCell[c=3]{} First period & & &
    \SetCell[c=3]{} Second Period & &\\
    & hypo & normo & hyper& hypo & normo & hyper& hypo & normo & hyper\\
    \hline
     TIR (\%) PP1 & 54,02 & 14,59 & 31,38 &48,7 &9,48&41,77&59,9&20,29&19,8\\
      Hour(h) & 57 & 15 & 33 &27 &5&23&30&10 &10\\
      \hline
  \end{tblr}
\end{table}

\end{document}

Problem with multirow and multicolumn in LaTeX

1 Answers1