Tikz-node 在舍入后不会以无衬线字体打印数字

Question

我尝试在 tikz-node 中以无衬线字体打印四舍五入的数字。但是，它不起作用。我如何才能将数字四舍五入并以无衬线字体打印？

\documentclass{standalone}
\usepackage{tikz}
\renewcommand{\familydefault}{\sfdefault}

\begin{document}
  \begin{tikzpicture}
    \node at (0,0) {3.14}; %how it should be
    \node at (1,1) {\pgfmathprintnumber[fixed, precision=2]{3.14159265358979323}}; %not working
  \end{tikzpicture}
\end{document}

Answer 1

您也可以使用选项assume math-mode。\pgfmathprintnumber这样就不会自动切换到数学模式，数字将按原样打印。

\documentclass{standalone}
\usepackage{tikz}
\renewcommand{\familydefault}{\sfdefault}

\begin{document}
  \begin{tikzpicture}
    \node at (0,0) {3.14}; %how it should be
    \node at (1,1) {\pgfmathprintnumber[fixed, precision=2,assume math mode]{3.14159265358979323}};
  \end{tikzpicture}
\end{document}

Answer 2

您可以使用\mathsf：

\documentclass{standalone}
\usepackage{tikz}
\renewcommand{\familydefault}{\sfdefault}

\begin{document}

\begin{tikzpicture}
\node at (0,0) {3.14};                  
\node at (1,1) {$\mathsf{\pgfmathprintnumber[fixed, precision=2]{3.14159265358979323}}$};           
\end{tikzpicture}

\end{document}

或者您可以sansmath本地加载并启用\mathversion{sans}：

\documentclass{standalone}
\usepackage{sansmath}
\usepackage{tikz}
\renewcommand{\familydefault}{\sfdefault}

\begin{document}

\begin{tikzpicture}
\mathversion{sans}
\node at (0,0) {3.14};
\node at (1,1) {\pgfmathprintnumber[fixed, precision=2]{3.14159265358979323}};
\end{tikzpicture}

\end{document}