Moving Table to Left and Adding Space to Columns

Question

In the following table, the numbers take up too much room. I do not want to landscape the table because there are too many rows.

So, I'd like to do both of the following:

1. Create more space between some of the columns. Especially if some columns don't require as much width, I'd like to know whether it is better that I manually set this space in order to optimize.
2. Shift the table to both the left and right in the process. When I adjust the \textwidth, that just moves it to the right. I'd like the table to still remain centered within the page.

I'd like for the contents to be centered within each column as they are with the current code.

I see a similar posting, but I don't know how to incorporate the results and if that is exactly what I'm trying to do: Adding space between columns in a table

\documentclass[12pt,english]{article}
\usepackage{longtable}
\usepackage{fullpage}
\usepackage{times}
\usepackage[flushleft]{threeparttable}
\usepackage[font=large,labelfont=bf,tableposition=top,textfont=bf]{caption}
\usepackage{tabularx}
\usepackage{booktabs}
\newcolumntype{C}{>{\centering\arraybackslash}X}

\begin{document}

\clearpage \newpage
\begin{table}[!ht]
\caption{Table Title}
\def\arraystretch{1.05}
\vspace{-0.2cm}
\begin{threeparttable}
\small
\begin{tabularx}{\textwidth}{l*{10}{C}}
\hline \hline \addlinespace
 & (1) & (2) & (3) & (4) & (5) & (6) & (7) & (8) & (9) & (10) \\  
Variable Name & 1234566 & 6543216 & 2233456 & 6655432 & 1830349 & 1234532 & 2532534 & 838285 & 123456 & 1285838 \\
\hline \hline \addlinespace
 \end{tabularx}
\begin{tablenotes}
\vspace{0.1cm}
\footnotesize{

\item \noindent \hspace{-1.8mm} Notes: 

 \noindent Sources: 
 }
\end{tablenotes}
\end{threeparttable}
\end{table}

\end{document}

Answer 1

Here are my suggestions:

• Insert the command \setlength\tabcolsep{3pt} to cut the amount of intercolumn whitespace in half. (The default value of this parameter is 6pt.)
• Replace the instruction \small (immediately after \begin{threeparttable}) with \footnotesize. (This also lets you get rid of the subsequent \footnotesize command.)

• Eliminate the vertical whitespace before the first column and after the final column by changing the tabularx setup as follows:

  \begin{tabularx}{\textwidth}{@{}l*{10}{C}@{}}
  

  (note the two new @{} elements).

With these changes, I manage to get the table to fit into the allocated textblock width. My papersize is US Letter; if yours is A4, you'll probably need to reduce the tabcolsep macro's value further, to 2pt.

Separately, since you're already loading the booktabs package, why don't you also replace the hideous \hline\hline commands with \toprule and \midrule, respectively. (This also lets you get rid of the \addlinespace instructions.)

Please note that the package times is obsolete. I suggest you load the package mathptmx instead -- unless you really want to mix Times New Roman as the text font and Computer Modern as the math font...

Addendum: On the subject of changing the width of the text block: Have a look at this answer for an example of how one may use the geometry package's commands \newgeometry and \restoregeometry to achieve this objective.

Answer 2

In addition to what @mico said I don't see why you want to use tabularx here. Your example fitted within the measure if i changed it to

 \setlength\tabcolsep{1pt}
 \begin{tabular}{l*{10}{l}}

If you really need to extend into the margins just for one table then the plain tex \centerline is a quick and easy way of doing so.

\centerline{\begin{tabular}{l*{12}{l}}
\hline \hline \addlinespace
 & (1) & (2) & (3) & (4) & (5) & (6) & (7) & (8) & (9) & (10) &(11)&(12) \\   
Variable Name & 1234566 & 6543216 & 2233456 & 6655432 & 1830349 & 1234532 & 2532534 & 838285 & 123456 & 1285838 \\
\hline \hline \addlinespace
 \end{tabular}}