Page Layout ⇒ Print page number if #pages > 1

[svend_tveskaeg]

Hi all.

In a arbitrarily LaTeX document, I would like to have the page number printed only if the number of pages is strictly greater than 1. (In a single-paged document, the page number should not be printed.)

I would like the number to be printed at the bottom of the page, centered (i.e., inside \cfoot{} form the fancyhdr package).

How do I do this?

I am thinking of a construction like

Code: Select all

\if\count{\pagenumber}>1
  \cfoot{\thepage}
 \else
  \cfoot{}
\fi
 

but it is just a thought.

Thank you in advance!

[localghost]

Off the top of my head I would suggest something like this.

Code: Select all

\cfoot{\ifnum\value{page}>1\thepage\else\fi}

Thorsten

[svend_tveskaeg]

Consider the following MWE:

Code: Select all

\documentclass{article}

\usepackage{fancyhdr}
\pagestyle{fancy}
\cfoot{\ifnum\value{page}>1\thepage\else\fi}

\begin{document}

Test
\newpage

Test

\end{document}

Here, nothing is printed in the centered footer.

[localghost]

Sorry. A very small detail can make the difference. I have forgotten a simple blank space.

Code: Select all

\cfoot{\ifnum\value{page}>1 \thepage\else\fi}

[Stefan Kottwitz]

Wow, a simple space! I tested it before, thanks to the MWE, and wondered about it. Seems that control sequences have to be separated here. {} works as well, as of course a line break would do.

Stefan

[svend_tveskaeg]

Hmm. I have not expressed myself correct. Sorry!

If the document is more than one page long, I would like to have a page number on every page, including the first. (In the MWE above with the correction, i.e. with the extra space in the command, there is no page number on the first page, but there are on the rest af them.)

If there is a single page, however, there should be no page number.

[localghost]

Obviously a small misunderstanding. You can achieve what you want easily by the totcount package.

Code: Select all

\documentclass{article}
\usepackage{fancyhdr}
\usepackage{totcount}

\regtotcounter{page}

\cfoot{\ifnum\totvalue{page}>1 \thepage\else\fi}
\pagestyle{fancy}

\begin{document}
  Test
  \newpage

  Test
\end{document}

It needs at least two compiler runs to get everything right.

[svend_tveskaeg]

Spot on!

Thank you very much.

[cgnieder]

Sorry. A very small detail can make the difference. I have forgotten a simple blank space.

Code: Select all

\cfoot{\ifnum\value{page}>1 \thepage\else\fi}

Wow, a simple space! I tested it before, thanks to the MWE, and wondered about it. Seems that control sequences have to be separated here.

That's because \ifnum scans ahead (and expands in the process) after the 1 until it finds a space or another non-number. It cannot know that 1 isn't the beginning of 17, say. So even if the actual value of the page counter was zero always the “false” branch was executed:

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\ifnum\value{page}>1\thepage\else\fi

would have been equivalent to

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\ifnum0>10\else\fi

That's why it's good practice to put a \relax after the test:

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\ifnum\value{page}>1\relax\thepage\else\fi

Best

[localghost]

Clemens,

many thanks for this clarification. I see that there's lot to learn for me.