PGFPlots 在节点和刻度上显示完整的十进制数

Question

我有以下图表

我需要在 y 轴刻度上以及在条形图顶部写出十进制数。我在这里找到了一些其他问题，它们建议使用y tick label style={/pgf/number format/fixed}，但这对我来说毫无用处，而scaled ticks=false，这对轴有用，但也产生了一些奇怪的效果，对条形图不起作用。

有没有一种可靠的方法可以让我完整地写出轴和节点上的数字（0.0051 和 0.018）？

母语：

\documentclass{article}
\usepackage[dvipsnames]{xcolor} %
\usepackage{pgfplots} %
\begin{document}
                \begin{tikzpicture}
                    \pgfplotsset{width=9 cm, height=9cm}
                    \begin{axis} [
                        symbolic x coords={0, last year, this year},
                        xtick={last year, this year},
%                        scaled ticks=false,
                        axis lines*=left, 
                        ymajorgrids = true, %shows the y grid
                        ymin=0,
%                        y tick label style={/pgf/number format/fixed},
                        bar width=12.5mm,
                        ybar=-1cm, 
                        enlarge x limits={abs=2.33cm},
                        nodes near coords,
                        every node near coord/.append style={color=black},
                    ]
                        \addplot [Red,fill=Red]
                        coordinates{ (last year,0.0051) (this year,0.018) } ;
                    \end{axis}
                \end{tikzpicture}
\end{document}

谢谢

Answer 1

要设置轴和条的数字格式，我们可以使用

\pgfkeys{/pgf/number format/fixed,/pgf/number format/precision=4}

代码

\documentclass{article}
\usepackage[dvipsnames]{xcolor} %
\usepackage{pgfplots} %
\pgfplotsset{compat=1.18}%<-- added
\begin{document}
\begin{tikzpicture}
  \pgfplotsset{width=9 cm, height=9cm}
  \pgfkeys{
    /pgf/number format/fixed,
    /pgf/number format/precision=4,
  }%<-- this line
  \begin{axis} [
      symbolic x coords={0, last year, this year},
      xtick={last year, this year},
      scaled ticks=false,
      axis lines*=left,
      ymajorgrids = true, %shows the y grid
      ymin=0,
      %  y tick label style={/pgf/number format/fixed,/pgf/number format/precision=4},
      bar width=12.5mm,
      ybar=-1cm,
      enlarge x limits={abs=2.33cm},
      nodes near coords,
      every node near coord/.append style={color=black},
    ]
    \addplot [Red,fill=Red]
    coordinates{ (last year,0.0051) (this year,0.018) } ;
  \end{axis}
\end{tikzpicture}
\end{document}