如何让图例边框更加紧密？

Question

我想让图例边框更紧密。\begin{axis}[legend style={...}]调整图例边框（边框的宽度和高度）的属性是什么？

\documentclass{article}
    \usepackage{pgfplots}

\begin{document}

\begin{tikzpicture}
    \begin{axis}[%
        xlabel={XLABEL},
        ylabel={YLABEL},
        legend columns=-1]
        \addplot+[mark=none] plot {x^2};
        \addlegendentry{a}
        \addplot+[mark=none] plot {1};
        \addlegendentry{b}
        \addplot+[mark=none] plot {x};
        \addlegendentry{c}
    \end{axis}
\end{tikzpicture}


\end{document}

Answer 1

您可以使用图例样式选项，如下所示：

\documentclass{article}
\usepackage{pgfplots}

\begin{document}
\begin{tikzpicture}
    \begin{axis}[%
        xlabel={XLABEL},
        ylabel={YLABEL},
        legend style={inner xsep=0pt, inner ysep=0pt},
        legend columns=-1]
        \addplot+[mark=none] plot {x^2};
        \addlegendentry{a}
        \addplot+[mark=none] plot {1};
        \addlegendentry{b}
        \addplot+[mark=none] plot {x};
        \addlegendentry{c}
    \end{axis}
\end{tikzpicture}
\end{document}