如何在 pgfplots 中模拟数据可视化的清晰科学轴

Question

我真的很喜欢 Ti 生成的“干净”科学轴钾Z'datavisualization库。但是，由于它提供了相当多的绘图功能，我想尝试pgfplots一下。我怎样才能在 中模仿datavisualizations的风格？scientific axes=cleanpgfplots

---

\documentclass{article}

\usepackage{tikz}
\usetikzlibrary{datavisualization.formats.functions}

\usepackage{pgfplots}
\pgfmathsetlengthmacro\axisdefaultwidth{5cm}
\pgfmathsetlengthmacro\axisdefaultheight{\axisdefaultwidth * (sqrt(5) - 1) / 2}
\pgfplotsset{
  compat=1.17,
  scale only axis,
}

\begin{document}

With Ti\emph kZ:
\vskip 1ex
\begin{tikzpicture}
  \datavisualization [
      scientific axes=clean,
      visualize as line,
    ]
  data [format=function] {
      var x : interval [-1.5:1.5] samples 7;
      func y = \value x*\value x;
    };
\end{tikzpicture}

\vskip 4ex

With \textsc{pgfplots}:
\vskip 1ex
\begin{tikzpicture}
  \begin{axis}
    \addplot [
        domain=-1.5:1.5,
        samples=7,
      ] {x^2};
  \end{axis}
\end{tikzpicture}

\end{document}

Answer 1

这只不过是添加一些键而已。使用

    axis lines=left,
    axis x line shift=1em,
    axis y line shift=1em,
    axis line style={-,very thin},
    axis background/.style={draw,ultra thin,gray},
    tick align=outside,
    xtick distance=0.5,
    ytick distance=0.5,

在我看来非常接近。

\documentclass{article}

\usepackage{tikz}
\usetikzlibrary{datavisualization.formats.functions}

\usepackage{pgfplots}
\pgfmathsetlengthmacro\axisdefaultwidth{5cm}
\pgfmathsetlengthmacro\axisdefaultheight{\axisdefaultwidth * (sqrt(5) - 1) / 2}
\pgfplotsset{
  compat=1.17,
  scale only axis,
}

\begin{document}

With Ti\emph kZ:
\vskip 2ex
\begin{tikzpicture}
  \datavisualization [
      scientific axes=clean,
      visualize as line,
    ]
  data [format=function] {
      var x : interval [-1.5:1.5] samples 7;
      func y = \value x*\value x;
    };
\end{tikzpicture}

\vskip 4ex

With \textsc{pgfplots}:
\vskip 2ex
\begin{tikzpicture}
  \begin{axis}[axis lines=left,
        axis x line shift=1em,
        axis y line shift=1em,
        axis line style={-,very thin},
        axis background/.style={draw,ultra thin,gray},
        tick align=outside,
        xtick distance=0.5,
        ytick distance=0.5,
        ]
    \addplot [
        domain=-1.5:1.5,
        samples=7,
      ] {x^2};
  \end{axis}
\end{tikzpicture}

\end{document}

不用说，您可以改变绘图的大小，并将上述键组合成一种样式。

\documentclass{article}

\usepackage{tikz}
\usetikzlibrary{datavisualization.formats.functions}

\usepackage{pgfplots}
\pgfmathsetlengthmacro\axisdefaultwidth{5cm}
\pgfmathsetlengthmacro\axisdefaultheight{\axisdefaultwidth * (sqrt(5) - 1) / 2}
\pgfplotsset{
  compat=1.17,
  scale only axis,
}

\begin{document}

With Ti\emph kZ:
\vskip 2ex
\begin{tikzpicture}
  \datavisualization [
      scientific axes=clean,
      visualize as line,
    ]
  data [format=function] {
      var x : interval [-1.5:1.5] samples 7;
      func y = \value x*\value x;
    };
\end{tikzpicture}

\vskip 4ex

With \textsc{pgfplots}:
\pgfplotsset{mimick datavisualization/.style={axis lines=left,
        axis x line shift=1em,
        axis y line shift=1em,
        axis line style={-,very thin},
        axis background/.style={draw,ultra thin,gray},
        tick align=outside,
        xtick distance=0.5,
        ytick distance=0.5,
        major tick length=2pt}}
\vskip 2ex
\begin{tikzpicture}
  \begin{axis}[mimick datavisualization,unit vector ratio=1 1 1,
    xmin=-1.5,xmax=1.5,width=5.6cm]
    \addplot [semithick,
        domain=-1.5:1.5,
        samples=7,
      ] {x^2};
  \end{axis}
\end{tikzpicture}
\end{document}