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如何增加箭头大小和文本大小

tag-icon • tag-icon tikz-pgf
如何增加箭头大小和文本大小 
\documentclass[tikz,border=10,a4paper]{standalone}
\usepackage{tikz}
\usetikzlibrary{arrows,shapes,positioning}
\usetikzlibrary{decorations.markings}
\tikzstyle arrowstyle=[scale=1]
\tikzstyle directed=[postaction={decorate,decoration={markings,
    mark=at position .65 with {\arrow[arrowstyle]{stealth}}}}]
\tikzstyle reverse directed=[postaction={decorate,decoration={markings,
    mark=at position .65 with {\arrowreversed[arrowstyle]{stealth};}}}]
\begin{document}
\begin{tikzpicture}[yscale=-1][>=Stealth]

    \draw[line width=0.5pt] (0,0) -- (80,0);
    \draw[line width=0.5pt] (0,0) -- (0,87);    

    \draw[line width=0.5pt] plot [smooth] coordinates {
    (80,0) (83,20) (78,35) (82,50)  (77,65) (83,80) (63,90) (45,92) (35,88) (20,91) (0,87)
    };


    \draw [line width=0.5pt] (40,38) circle [radius=12.0];

    \draw[ultra thick,directed](-10,0) -- (0,0);
    \draw[ultra thick,directed](0,-10) -- (0,0);

    \node[] at (-10,-2) {$X$};
    \node[] at (2,-10) {$i\,Y$};
    \node[] at (1,1) {$z_{0}$};

\end{tikzpicture}

\end{document}

尝试增加文本和箭头的大小以及箭头线的粗细。 在此处输入图片描述代码：

答案1

默认单位是x=1cm，y=1cm所以您的绘图非常大！

如果你将该tikzpicture行改为这样：

\begin{tikzpicture}[x=2mm,y=2mm,yscale=-1][>=Stealth]

那么文字和箭头看起来会更加合理。

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