In Dimensioning of a technical drawing in TikZ a very nice solution to mark lengths on a drawing has been given that uses pgfmath's capability. How do I omit having the decimal part of the number printed, eg: 25 instead of 25.0?
1 Answer
You can use the optional arguments of \pgfmathprintnumber
to either cut off the decimal part or to round the number to an integer. Alternatively, you can use the \num
macro from the siunitx
package to round the number:
\documentclass{article}
\usepackage{tikz}
\usepackage{siunitx}
\begin{document}
\pgfmathsetmacro\testnumber{25.7}
\pgfmathprintnumber{\testnumber}
\pgfmathprintnumber[int trunc]{\testnumber}
\pgfmathprintnumber[fixed,precision=0]{\testnumber}
\num{\testnumber}
\num[round-mode=figures]{\testnumber}
\end{document}
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Hi Jake, Thanks for the answer, but when I cut and paste the above example into a document, pdflatex can't typeset it. It returns: Undefined control sequence. l.4 \pgfmathprintnumber– ChahJun 1, 2011 at 9:19
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@Chah: You might have to update to a more recent version of PGF for this. Jun 1, 2011 at 10:21
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@Chah: Yes, it looks like you're using an outdated version of PGF. You can get the version number by inserting
\pgfversion
in your document; it should be at least v2.1.– JakeJun 1, 2011 at 10:59