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tikzpicture 中的货币符号不起作用

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tikzpicture 中的货币符号不起作用

我想创建一个货币兑换图，如节点中所示，用货币符号而不是文字表示。在此处输入图片描述

这是原始代码

\documentclass[10pt,a4paper]{article}
\usepackage{tikz,tkz-berge}
\begin{document}
\begin{figure}
\begin{tikzpicture}
    \foreach \nodename/\x/\y in {GBP/0/4, USD/6/0, EUR/0/-4, MYR/-6/0}
    \node (\nodename) at (\x,\y) [shape=circle, inner sep=2pt, draw, thick {\nodename};

    \path[->,>=stealth,thick]
        (GBP) edge [bend left=12] node[fill=white, pos=0.75] {1.14} (EUR)
        (EUR) edge [bend left=12] node[fill=white, pos=0.75] {0.88} (GBP)
        (GBP) edge [bend left=12] node[fill=white, pos=0.5] {5.35} (MYR)
        (MYR) edge [bend left=12] node[fill=white, pos=0.5] {0.19} (GBP)
        (GBP) edge [bend left=12] node[fill=white, pos=0.5] {1.34} (USD)
        (USD) edge [bend left=12] node[fill=white, pos=0.5] {0.74} (GBP)
        (EUR) edge [bend left=12] node[fill=white, pos=0.5] {1.18} (USD)
        (USD) edge [bend left=12] node[fill=white, pos=0.5] {0.85} (EUR)
        (EUR) edge [bend left=12] node[fill=white, pos=0.5] {4.71} (MYR)
        (MYR) edge [bend left=12] node[fill=white, pos=0.5] {0.21} (EUR)
        (USD) edge [bend left=10] node[fill=white, pos=0.7] {3.99} (MYR)
        (MYR) edge [bend left=10] node[fill=white, pos=0.7] {0.25} (USD);
\end{tikzpicture}
\caption{A digraph showing exchange rates between US Dollar (USD), Ringgit Malaysia (MYR), Pounds (GBP), and Euro (EUR).}
\end{figure}
\end{document}

因此，我将代码中的所有 改为GBP、\pounds改为EUR（\euro改为\usepackage{eurosym}）、MYR改为RM和USD改为\$，但它不起作用。

代码中有什么错误吗？谢谢。

答案1

当然可以，只是不能用作节点名称。您使用了\nodename两次，一次是给节点命名。在那里您不能使用符号。而您使用的\nodename是节点的内容，在那里符号是可以的。您需要做的就是解开这两者。

\documentclass[10pt,a4paper]{article}
\usepackage{tikz}
\usepackage{eurosym}
\begin{document}
\begin{figure}
\begin{tikzpicture}[>=stealth]
   \foreach \X/\x/\y/\Symb in
   {GBP/0/4/\pounds,USD/6/0/\$,EUR/0/-4/\euro,MYR/{-6}/0/RM}
    {\node (\X) at (\x,\y) [shape=circle, inner sep=2pt, draw, thick]
    {\Symb};
    }

    \path[->,thick]
        (GBP) edge [bend left=12] node[fill=white, pos=0.75] {1.14} (EUR)
        (EUR) edge [bend left=12] node[fill=white, pos=0.75] {0.88} (GBP)
        (GBP) edge [bend left=12] node[fill=white, pos=0.5] {5.35} (MYR)
        (MYR) edge [bend left=12] node[fill=white, pos=0.5] {0.19} (GBP)
        (GBP) edge [bend left=12] node[fill=white, pos=0.5] {1.34} (USD)
        (USD) edge [bend left=12] node[fill=white, pos=0.5] {0.74} (GBP)
        (EUR) edge [bend left=12] node[fill=white, pos=0.5] {1.18} (USD)
        (USD) edge [bend left=12] node[fill=white, pos=0.5] {0.85} (EUR)
        (EUR) edge [bend left=12] node[fill=white, pos=0.5] {4.71} (MYR)
        (MYR) edge [bend left=12] node[fill=white, pos=0.5] {0.21} (EUR)
        (USD) edge [bend left=10] node[fill=white, pos=0.7] {3.99} (MYR)
        (MYR) edge [bend left=10] node[fill=white, pos=0.7] {0.25} (USD);
\end{tikzpicture}
\caption{A digraph showing exchange rates between US Dollar (\$), 
Ringgit Malaysia (RM), Pounds (\pounds), and Euro (\euro).}
\end{figure}
\end{document}

在此处输入图片描述

答案2

绘制图表的另一种方法：不使用\foreach循环，而使用edge quotes。节点通过库的帮助进行定位positioning：

\documentclass[10pt,a4paper]{article}
\usepackage{tikz}
\usetikzlibrary{quotes,positioning}
\usepackage{eurosym}

\begin{document}
    \begin{figure}
\begin{tikzpicture}[
    node distance = 3 and 5,
every node/.style = {circle, draw, thick, minimum size=8mm, inner sep=2pt},
every edge/.style = {draw, thick, -stealth, bend left=12},
every edge quotes/.style={draw=none, fill=white}
                    ]
\node (MYR)                         {RM};
\node (GBP) [above right=of MYR]    {\pounds};
\node (USD) [below right=of GBP]    {\$};
\node (EUR) [below right=of MYR]    {\euro};
%
\draw   (GBP) edge [pos=0.75, "1.14"]   (EUR)
        (EUR) edge [pos=0.75, "0.88"]   (GBP)
        (GBP) edge ["5.35"]             (MYR)
        (MYR) edge ["0.19"]             (GBP)
        (GBP) edge ["1.34"]             (USD)
        (USD) edge ["0.74"]             (GBP)
        (EUR) edge ["1.18"]             (USD)
        (USD) edge ["0.85"]             (EUR)
        (EUR) edge ["4.71"]             (MYR)
        (MYR) edge ["0.21"]             (EUR)
        (USD) edge [pos=0.7, "3.99"]    (MYR)
        (MYR) edge [pos=0.7, "0.25"]    (USD);
\end{tikzpicture}
\caption{A digraph showing exchange rates between US Dollar (\$),
Ringgit Malaysia (RM), Pounds (\pounds), and Euro (\euro).}
    \end{figure}
\end{document}

在此处输入图片描述

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