tikz 图形缩放到点

tikz 图形缩放到点

我有一张图表,我记得以前它工作得很好,突然我注意到,所有内容都缩放到了 y 轴底部的一个小点。我不确定是否有任何变化,也找不到问题所在。

在此处输入图片描述

\begin{tikzpicture}
    \begin{axis}[
            axis lines = middle,  %% instead of above two lines this one is enough
            scaled ticks=false,
            axis equal,
            scale=0.5,
            y=1cm,
            x=3cm,
            grid=none,
            xmax=2.5,xmin=-0.01,
            ymin=-1,ymax=5.2,
            xlabel=$x$,ylabel=$y$,
            xtick={0,0.5,1,1.5,2},
            ytick={-1,0,1,2,3,4},
            ylabel = $U(r)$,
            xlabel = $r(r_M)$,
        ]
        \draw[red, thick] (0, 5)--(0, 0)--(2.5, 0);
        \draw[domain=0.84:2.5,smooth,variable=\x,blue, thick] plot ({\x},{0.1*\x^(-12)-0.1*\x^(-6)});
    \end{axis}
\end{tikzpicture}

答案1

pgfplots1.11 版本起axis cs,这是默认坐标系。但您必须在加载包后立即1.11至少设置。如果您没有设置 的值,则使用 。compatpgfplotscompatpre 1.3

在此处输入图片描述

\documentclass{article}
\usepackage{pgfplots}
\pgfplotsset{compat=1.15}% comment this to see the issue
\begin{document}
\begin{tikzpicture}
    \begin{axis}[
            axis lines = middle,  %% instead of above two lines this one is enough
            scaled ticks=false,
            axis equal,
            scale=0.5,
            y=1cm,
            x=3cm,
            grid=none,
            xmax=2.5,xmin=-0.01,
            ymin=-1,ymax=5.2,
            xlabel=$x$,ylabel=$y$,
            xtick={0,0.5,1,1.5,2},
            ytick={-1,0,1,2,3,4},
            ylabel = $U(r)$,
            xlabel = $r(r_M)$,
        ]
        \draw[red, thick] (0, 5)--(0, 0)--(2.5, 0);
        \draw[domain=0.84:2.5,smooth,variable=\x,blue, thick] plot ({\x},{0.1*\x^(-12)-0.1*\x^(-6)});
    \end{axis}
\end{tikzpicture}
\end{document}

但我会用

\plot[domain=0.84:2.5,blue, thick] {0.1*x^(-12)-0.1*x^(-6)};

而是第二个\draw命令。

相关内容