[Tex/LaTex] Two tables vertically align

tablesvertical alignment

i have two tables, each of them has 4 columns. one is just below the other. i want to know how to make every column of the below table have same width of the column of the above table. it looks like this:

|-------|-------|-------|-------|
|       |       |       |       |
|-------|-------|-------|-------|
|       |       |       |       |
|-------|-------|-------|-------|
|       |       |       |       |
|-------|-------|-------|-------|

some space lines are here.

|-------|-------|-------|-------|
|       |       |       |       |
|-------|-------|-------|-------|
|       |       |       |       |
|-------|-------|-------|-------|

adding one more hline will make one table septable, which it looks like two tables with good vertical alignment.

\documentclass{article}

\begin{document}
\begin{tabular}[b]{|c|c|c|c|}
\hline
\textbf{Item-No.} & \textbf{name} & \textbf{cross section} & \textbf{grade}\\
\hline
\textbf{W1} & Z-column & HN350x175 -- 346x174 & Q235\\
\hline
\textbf{W17} & Horiz. support transversal hoist beam & HW100x100 & Q235\\
\hline
\hline
\textbf{P11} & longitudinal hoist beam & HN300x150 -- 300x150 & Q235\\
\hline
\end{tabular}

\end{document}

but one more thing, how to add vertical spacing between the tables?

Best Answer

The simplest way to add some vertical space between the two logical tables while having the same column width is to only use one real table and add the vertical white space as \multicolumn row which includes a \vspace to make it as high as required. Note that the \multicolumn is required to disable the vertical borders in the normal cells. Without this a simple empty cell with \vspace would be enough.

You can adjust the white space with the argument of \vspace{<distance>}. The value wont be the exact distance because the cell \strut is also in effect, which adds also a certain depth. If you need exact distances you have to calculate this in.

Example Code:

\documentclass{article}

\begin{document}
\begin{tabular}[b]{|c|c|c|c|}
\hline
\textbf{Item-No.} & \textbf{name} & \textbf{cross section} & \textbf{grade}\\
\hline
\textbf{W1} & Z-column & HN350x175 -- 346x174 & Q235\\
\hline
\textbf{W17} & Horiz. support transversal hoist beam & HW100x100 & Q235\\
\hline
%
\multicolumn{4}{c}{\vspace{1cm}}\\
%
\hline
\textbf{P11} & longitudinal hoist beam & HN300x150 -- 300x150 & Q235\\
\hline
\end{tabular}

\end{document}

Result:

Result

Related Solutions

[Tex/LaTex] Increasing height of single row in table

You can use a \rule of zero width and the desired height; however, I would like to suggest you the use of the booktabs package to build your tables (this implies giving up on vertical rules, but the result is much better). Below an example with and without booktabs:

\documentclass{article}
\usepackage{amsmath}
\usepackage{booktabs}

\begin{document}

\begin{table}[htbp]
\caption{Some values}
\centering
\begin{tabular}{@{}*{6}{c}@{}}
\toprule
& \multicolumn{2}{c}{L2 Unit} & \multicolumn{3}{c}{SUB} \\ 
\cmidrule(r){2-3}\cmidrule(l){4-6} 
Unit & $E^{\text{Dyn}}_{\text{L2}}$ &  $P^{\text{SUP}}_{\text{L2}}$ 
  & Number & $E^{\text{Dyn}}_{\text{SUB}}$ & $P^{\text{SUP}}_{\text{SUB}}$ \\
Size & (unit) & (unit) & ($N$) &(unit) & (unit) \\
\cmidrule(r){1-1}\cmidrule(lr){2-2}\cmidrule(lr){3-3}
\cmidrule(lr){4-4}\cmidrule(lr){5-5}\cmidrule(l){6-6}
4MB & 0.289 & 1.39 & 2 & .005 & .006\\
\bottomrule
\end{tabular}
\end{table}

\begin{table}[htbp]
\caption{Some values}
\centering
\begin{tabular}{|c|c|c||c|c|c|}
\hline
& \multicolumn{2}{c||}{L2 Unit} &  \multicolumn{3}{c|}{SUB} \\ \cline{2-6} 
\rule{0pt}{14pt}Unit & $E^{\text{Dyn}}_{\text{L2}}$&  $P^{\text{SUP}}_{\text{L2}}$ &  Number  &$E^{\text{Dyn}}_{\text{SUB}}$ &$P^{\text{SUP}}_{\text{SUB}}$ \\
Size & (unit) & (unit) &  ($N$) &(unit) & (unit) \\\hline
4MB& 0.289& 1.39 &2 & .005 &.006\\\hline
\end{tabular}
\end{table}

\end{document}

enter image description here

[Tex/LaTex] IEEEtran – Two tables on top of page, two column

From your description, it seems that the two tabular environments are being moved to a floats only page; if this is the case, the float will be placed centered vertically on the page; to change this behaviour, you can change the value for the length \@dblfptop, using

\makeatletter
\@dblfptop 0pt
\makeatother

A complete example:

\documentclass[journal]{IEEEtran}

\makeatletter
\@dblfptop 0pt
\makeatother

\title{The Title}
\author{The Author}

\markboth{Journal of \LaTeX\ Class Files,~Vol.~6, No.~1, January~2007}%
{Shell \MakeLowercase{\textit{et al.}}: Bare Demo of IEEEtran.cls for Journals}

\begin{document}

\maketitle

\begin{abstract}
The abstract goes here.
\end{abstract}

\section{Introduction}
I wish you the best of success.

\begin{table*}[!t]
    \centering
    \begin{tabular}{ccc}
    \hline
    a&b&c\\
    \hline
    \end{tabular}
    \quad
    \begin{tabular}{ccc}
    \hline
    d&e&f\\
    \hline
    \end{tabular}
\end{table*}

\end{document}

An image of the top portion of the second page, showing the float at the top: