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如何调整图形大小？

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如何调整图形大小？

我正在尝试调整下图的大小。我已经为一个文档制作了该图。现在我想在另一个文档中重复使用该代码，但我需要将图缩小。我尝试了许多调整大小的命令，甚至使用了 minipage（在代码的不同部分），但都不起作用。非常感谢您的帮助。

\documentclass{article} 
\usepackage[utf8]{inputenc}
\usepackage{amsmath}
\usepackage{pgf,tikz}
\usetikzlibrary{positioning,calc,chains,fit,shapes,arrows}
\begin{document}
\begin{figure}
\begin{center}
    \definecolor{xdxdff}{rgb}{0.49019607843137253,0.49019607843137253,1}
    \definecolor{ududff}{rgb}{0.30196078431372547,0.30196078431372547,1}
    \definecolor{cqcqcq}{rgb}{0.7529411764705882,0.7529411764705882,0.7529411764705882}
    \begin{tikzpicture}[line cap=round,line join=round,>=triangle 45,x=1cm,y=1cm]
        \draw [color=cqcqcq,, xstep=1cm,ystep=1cm] (-1.52,-1.25) grid (7.52,7.25);
        \clip(-1.52,-1.25) rectangle (6.52,6.25);
        \draw [line width=2pt] (3,3) circle (2.8cm);
        \draw [->,line width=2pt] (3,3) -- (5.669424238929763,3.845088298708634);
        \draw (3.58,4.02) node[anchor=north west] {$\sqrt n$};
        \draw (1,6) node[anchor=north west] {$C$};
        \draw[thick,->] (-1,3) -- (6.5,3) node[anchor=north west] {};
        \draw[thick,->] (3,-1) -- (3,6.2) node[anchor=south east] {};
        \begin{scriptsize}
            \draw [fill=ududff] (3,3) circle (2.5pt);
            \draw [fill=xdxdff] (5.669424238929763,3.845088298708634) circle (2.5pt);
        \end{scriptsize}
    \end{tikzpicture}
 \end{center}
\end{figure}
\end{document}

答案1

我有一种预感，\scalebox和\resizebox——这两个宏都是由graphicx包提供的——就是你要找的。前一个宏将其主要参数按一个因子缩放，相对于对象的“自然大小”。后一个宏将其主要参数缩放为绝对大小。

在此处输入图片描述

\documentclass{article} 
\usepackage[utf8]{inputenc}
\usepackage{graphicx,amsmath}
\usepackage{pgf,tikz}
\usetikzlibrary{positioning,calc,chains,fit,shapes,arrows}

\definecolor{xdxdff}{rgb}{0.490,0.490,1}
\definecolor{ududff}{rgb}{0.302,0.302,1}
\definecolor{cqcqcq}{rgb}{0.753,0.753,0.753}
\newcommand\mypic{%
\begin{tikzpicture}[line cap=round,line join=round,>=triangle 45, x=1cm, y=1cm]
    \draw [color=cqcqcq,, xstep=1cm, ystep=1cm] (-1.52,-1.25) grid (7.52,7.25);
    \clip(-1.52,-1.25) rectangle (6.52,6.25);
    \draw [line width=2pt] (3,3) circle (2.8cm);
    \draw [->,line width=2pt] (3,3) -- (5.669,3.845);
    \draw (3.58,4.02) node[anchor=north west] {$\sqrt n$};
    \draw (1,6) node[anchor=north west] {$C$};
    \draw[thick,->] (-1,3) -- (6.5,3) node[anchor=north west] {};
    \draw[thick,->] (3,-1) -- (3,6.2) node[anchor=south east] {};
    \begin{scriptsize}
     \draw [fill=ududff] (3,3) circle (2.5pt);
     \draw [fill=xdxdff] (5.669,3.845) circle (2.5pt);
    \end{scriptsize}
\end{tikzpicture}}

\begin{document}
\begin{figure}
\centering
\mypic % no scaling, i.e., display pic at its "natural" size

\scalebox{0.25}{\mypic} % scale down to 1/4 of natural size

\resizebox{5cm}{!}{\mypic} % "!" means: vertical scale same as horiz. scale
\end{figure}
\end{document}

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