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在 TikZ 中绘制此类图表

tag-icon • tag-icon tikz-pgf
在 TikZ 中绘制此类图表

我想要绘制如下图表：

图表需要看起来像两条钟形曲线。没有特定的函数或任何东西。

这是我所拥有的。

\begin{tikzpicture}
    \draw[very thin,color=lightgray,step=0.5cm] (0,0) grid (6.1,3.6);
    \draw[->] (0,0) -- (6.2,0) node[anchor=north] {$t$};
    \draw[->] (0,0) -- (0,3.7) node[anchor=east] {$v$};
    \draw
        (0,0) node[anchor=north] {0}
        (1,0) node[anchor=north] {10}
        (2,0) node[anchor=north] {20}
        (3,0) node[anchor=north] {30}
        (4,0) node[anchor=north] {40}
        (5,0) node[anchor=north] {50}
        (0,1) node[anchor=east] {5}
        (0,2) node[anchor=east] {10}
        (0,3) node[anchor=east] {15};
    \draw[thick,color=blue] (0,0) to [out=0,in=180] (1,3);
    \draw[thick,color=blue] (1,3) to [out=0,in=180] (2,0);
    \draw[thick,color=blue] (2,0) to (4,0);
    \draw[thick,color=blue] (4,0) to [out=0,in=180] (5,3);
    \draw[thick,color=blue] (5,3) to [out=0,in=180] (6,0);
\end{tikzpicture}

正如您所见，它看起来并不像钟形曲线。

我对 TikZ 还很陌生，这是我所知道的唯一绘图方法。请帮忙！

答案1

欢迎来到 TeX.SE！您可以绘制任意函数。请注意，使用 绘制此函数可能会让您的生活更加轻松pgfplots。

\documentclass[tikz,border=3.14mm]{standalone}
\begin{document}
\begin{tikzpicture}[declare function={Gaussian(\x,\y,\z)=exp(-\z*(\x-\y)*(\x-\y));}]
    \draw[very thin,color=lightgray,step=0.5cm] (0,0) grid (6.1,3.6);
    \draw[->] (0,0) -- (6.2,0) node[anchor=north] {$t$};
    \draw[->] (0,0) -- (0,3.7) node[anchor=east] {$v$};
    \draw
        (0,0) node[anchor=north] {0}
        (1,0) node[anchor=north] {10}
        (2,0) node[anchor=north] {20}
        (3,0) node[anchor=north] {30}
        (4,0) node[anchor=north] {40}
        (5,0) node[anchor=north] {50}
        (0,1) node[anchor=east] {5}
        (0,2) node[anchor=east] {10}
        (0,3) node[anchor=east] {15};
    \draw[thick,color=blue] plot[domain=0:2,variable=\x,samples=101]
    ({\x},{3*Gaussian(\x,1,5)});    
    \draw[thick,color=blue] plot[domain=4:6,variable=\x,samples=101]
    ({\x},{3*Gaussian(\x,5,5)});    
\end{tikzpicture}
\end{document}

在此处输入图片描述

只是为了好玩：一个快速的 pgfplots 变体。

\documentclass[tikz,border=3.14mm]{standalone}
\usepackage{pgfplots}
\pgfplotsset{compat=1.16}
\begin{document}
\begin{tikzpicture}[declare function={Gaussian(\x,\y,\z)=exp(-\z*(\x-\y)*(\x-\y));}]
\begin{axis}[axis lines=left,grid=major,xmin=0,xmax=72,ymin=0,ymax=22,
xlabel=$t$,ylabel=$v$]
 \addplot[domain=0:20,thick,blue,samples=101] {15*Gaussian(\x,10,0.1)};
 \addplot[domain=40:60,thick,blue,samples=101] {15*Gaussian(\x,50,0.1)};
\end{axis}
\end{tikzpicture}
\end{document}

在此处输入图片描述

您当然可以调整它的外观。

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