Graphics, Figures & Tables ⇒ Problem with Table in double-columned Article

[paristhecure]

Hello everyone,

This is my first post.
I am trying to replica one table in a double columned paper. I have some problems.

I have so far come up with:

\begin{table*}[ht]
\caption{Summary of experimental results on the pressure dependence of soot in laminar diffusion flames}
\begin{tabularx}{\textwidth}{@{\extracolsep{\fill}}p{2cm}p{2cm}p{2cm}p{2.5cm}p{2.5cm}p{2.5cm}}
\toprule
Refs. & Pressure range [atm] & Fuel and fuel flow rate [mg/s] & \multicolumn{3}{l}{Pressure scaling factor $n$ in [soot] $\propto P^n$} \\ \cmidrule{4-6}
&&&Path integrated maximum soot&Local maximum soot&Maximum conversion of carbon
\end{tabularx}
\end{table*}


The problem is that the cmidrule sits quite below the relevant text, that is, "Pressure exponent, n". Also as can be seen in the attachment, last 3 columns which sit just below the cmidrule also sits quite below the relevant text.
Can somebody help me on this.

Thanks
Emre

[localghost]

Typesetting tables can sometimes be very hard. In this case it needs several tricks. For one of them it requires the multirow package. The table itself is done by the quite new and very sophisticated tabu package. The \cite commands are just dummies.

Code: Select all

\documentclass[11pt,a4paper,english]{article}
\usepackage[T1]{fontenc}
\usepackage[utf8]{inputenc}
\usepackage{babel}
\usepackage[margin=2cm]{geometry}
\usepackage{caption}
\usepackage{booktabs,multirow,tabu}
\usepackage{siunitx}

\captionsetup{%
  font=small,
  labelfont=bf,
  tableposition=top
}

\sisetup{%
  load-configurations=abbreviations,
  range-phrase={--},
  separate-uncertainty,
}
%\setlength{\extrarowsep}{3pt}

\begin{document}
  \begin{table*}[!ht]
    \caption{Summary of experimental results on the pressure dependence of soot in laminar diffusion flames}\label{tab:pressure-soot}
    \begin{tabu} to \textwidth {l*5{>{\raggedright}X}}\toprule
      Refs. &
      \multirow{1}{*}{\smash{\parbox[t]{\linewidth}{\raggedright Pressure range [atm]}}} &
      \multirow{1}{*}{\smash{\parbox[t]{\linewidth}{\raggedright Fuel and fuel flow rate [mg/s]}}} &
      \multicolumn{3}{c}{Pressure scaling factor $n$ in [soot] $\propto P^n$} \\ \cmidrule{4-6}
          & & & Path integrated maximum soot & Local maximum soot (location) & Maximum conversion of carbon \\ \midrule
      \cite{first} & \numrange{0.1}{1} & Ethylene\par  \numlist{1.9;2.7;4.4} & \num{1.2(1)} & & \\ \addlinespace
      \cite{second} & \numrange{0.1}{0.4} & Ethylene\par  \num{3.4} & \num{1.26} & 2 (\SI{20}{\mm} above burner rim) & \\ \addlinespace
      \cite{third} & \numrange{0.1}{1.6} & Ethylene\par  \num{1.13} & \num{1.2} & \num{1.7} & \\  \addlinespace
      \cite{third} & \numrange{0.1}{2.5} & Methane\par  \num{1.1} & 1 & \num{1.2} & \\  \addlinespace
      \cite{fourth} & \numrange{0.5}{2} & Methane\par  \num{0.55} & 2 & 1 & \\  \addlinespace
      \cite{sixth} & \numrange{2}{4} & Methane\par  \num{0.55} & \num{1.2} & \num{0.1} & \\ \bottomrule
    \end{tabu}
\end{table*}
\end{document}

The \smash command fools LaTeX by hiding the height of its argument. You might wonder why there is a \multirow{1}{*}{…} command. Without this the desired output can be achieved. Copy the following code into the above example and compare.

Code: Select all

\begin{table*}[!ht]
  \caption{Summary of experimental results on the pressure dependence of soot in laminar diffusion flames}\label{tab:pressure-soot}
  \begin{tabu} to \textwidth {*6{>{\raggedright}X}}\toprule
    Refs. &
    \smash{\parbox[t]{\linewidth}{\raggedright Pressure range [atm]}} &
    \smash{\parbox[t]{\linewidth}{\raggedright Fuel and fuel flow rate [mg/s]}} &
    \multicolumn{3}{c}{Pressure scaling factor $n$ in [soot] $\propto P^n$} \\ \cmidrule{4-6}
    & & & Path integrated maximum soot&Local maximum soot&Maximum conversion of carbon \\ \midrule
  \end{tabu}
\end{table*}

This causes still some additional space right above the \cmidrule (don't ask me why).

There are several other packages involved in this solution. Study their manuals to learn what they are for.


Best regards and welcome to the board
Thorsten

[paristhecure]

Hi Thorsten,

Thank you for your insight. This solved my problem; I am playing with the commands right now to understand how each of them works. You saved me from spending another day on this graph.

Cheers
Emre