我编写了一个显示曲线的代码，代码如下：
\documentclass[margin=3mm]{standalone}
\usepackage{pgfplots}
\pgfplotsset{compat=1.18}
\begin{document}
\pgfplotstableread[col sep=comma]{
-1.00000000e+00, 1.00000000e+00, -3.50000000e+00, 9.75000000e+00, -2.62500000e+01, 1.23005515e+02
-5.78947368e-01, 1.00000000e+00, -3.07894737e+00, 6.97991690e+00, -1.45631652e+01, 5.91648918e+01
-1.57894737e-01, 1.00000000e+00, -2.65789474e+00, 4.56440443e+00, -6.15144336e+00, 1.93708181e+01
2.63157895e-01, 1.00000000e+00, -2.23684211e+00, 2.50346260e+00, -5.66955824e-01, -2.35859076e+00
6.84210526e-01, 1.00000000e+00, -1.81578947e+00, 7.97091413e-01, 2.63817612e+00, -1.12508974e+01
1.10526316e+00, 1.00000000e+00, -1.39473684e+00, -5.54709141e-01, 3.91183117e+00, -1.17793423e+01
1.52631579e+00, 1.00000000e+00, -9.73684211e-01, -1.55193906e+00, 3.70188803e+00, -7.66284401e+00
1.94736842e+00, 1.00000000e+00, -5.52631579e-01, -2.19459834e+00, 2.45622540e+00, -1.86599894e+00
2.36842105e+00, 1.00000000e+00, -1.31578947e-01, -2.48268698e+00, 6.22721971e-01, 3.40091845e+00
2.78947368e+00, 1.00000000e+00, 2.89473684e-01, -2.41620499e+00, -1.35074355e+00, 6.68195573e+00
3.21052632e+00, 1.00000000e+00, 7.10526316e-01, -1.99515235e+00, -3.01629246e+00, 7.27548248e+00
3.63157895e+00, 1.00000000e+00, 1.13157895e+00, -1.21952909e+00, -3.92604607e+00, 5.23419032e+00
4.05263158e+00, 1.00000000e+00, 1.55263158e+00, -8.93351801e-02, -3.63212567e+00, 1.36509289e+00
4.47368421e+00, 1.00000000e+00, 1.97368421e+00, 1.39542936e+00, -1.68665257e+00, -2.77047418e+00
4.89473684e+00, 1.00000000e+00, 2.39473684e+00, 3.23476454e+00, 2.35825193e+00, -4.85685319e+00
5.31578947e+00, 1.00000000e+00, 2.81578947e+00, 5.42867036e+00, 8.95046654e+00, -1.82406447e+00
5.73684211e+00, 1.00000000e+00, 3.23684211e+00, 7.97714681e+00, 1.85378700e+01, 1.01521937e+01
6.15789474e+00, 1.00000000e+00, 3.65789474e+00, 1.08801939e+01, 3.15683409e+01, 3.56505451e+01
6.57894737e+00, 1.00000000e+00, 4.07894737e+00, 1.41378116e+01, 4.84897580e+01, 8.00039353e+01
7.00000000e+00, 1.00000000e+00, 4.50000000e+00, 1.77500000e+01, 6.97500000e+01, 1.49299632e+02
}\loadedtable
\begin{tikzpicture}
\begin{axis}[
axis lines=center,
xmin=-0.75, xmax=11,
ymin=-75, ymax=85,
axis on top,
xtick distance=1,
ytick distance=10,
tick label style={font=\footnotesize, inner sep=1pt, fill=white},
no marks, samples=15, smooth,
every axis plot post/.append style={very thick}
]
\addplot table[x index=0,y index=1] {\loadedtable}node [pos=0.3, below right] {$Q^{1/2,1/2,5}_{0}(x)$};
\addplot table[x index=0,y index=2] {\loadedtable}node [pos=0.3, below right] {$Q^{1/2,1/2,5}_{1}(x)$};
\addplot table[x index=0,y index=3] {\loadedtable}node [pos=0.3, below right] {$Q^{1/2,1/2,5}_{2}(x)$};
\addplot table[x index=0,y index=4] {\loadedtable}node [pos=0.3, below right] {$Q^{1/2,1/2,5}_{3}(x)$};
\addplot table[x index=0,y index=5] {\loadedtable}node [pos=0.3, below right] {$Q^{1/2,1/2,5}_{4}(x)$};
\end{axis}
\end{tikzpicture}
\end{document}
结果
但如你所见，写的内容组织得不太好。因此，我想要一个像下面这样的设计。
请给个想法。
答案1
这里我为您演示两个选项：
- 使用图例条目
- 将文本节点定位在绘图坐标中
对于图例条目，我将 x-max 设置为更高的值，以避免与曲线重叠。当然还有更多放置它的方法。条目在 axis-pramble 中定义。（请参阅 pgfplots 手册中的轴描述/图例）
对于直接放置，它不是沿着曲线（使用pos），这会像您显示的那样放置它，而是使用axis cs:右侧（假设棕色曲线与所述描述相符）。由于文本的长度各不相同，因此最好指定节点的west- 侧anchor，而不是其中心。（参见 pgfmanual 中的节点特性）
\documentclass[margin=3mm]{standalone}
\usepackage{pgfplots}
\pgfplotsset{compat=1.18}
\begin{document}
\pgfplotstableread[col sep=comma]{
-1.00000000e+00, 1.00000000e+00, -3.50000000e+00, 9.75000000e+00, -2.62500000e+01, 1.23005515e+02
-5.78947368e-01, 1.00000000e+00, -3.07894737e+00, 6.97991690e+00, -1.45631652e+01, 5.91648918e+01
-1.57894737e-01, 1.00000000e+00, -2.65789474e+00, 4.56440443e+00, -6.15144336e+00, 1.93708181e+01
2.63157895e-01, 1.00000000e+00, -2.23684211e+00, 2.50346260e+00, -5.66955824e-01, -2.35859076e+00
6.84210526e-01, 1.00000000e+00, -1.81578947e+00, 7.97091413e-01, 2.63817612e+00, -1.12508974e+01
1.10526316e+00, 1.00000000e+00, -1.39473684e+00, -5.54709141e-01, 3.91183117e+00, -1.17793423e+01
1.52631579e+00, 1.00000000e+00, -9.73684211e-01, -1.55193906e+00, 3.70188803e+00, -7.66284401e+00
1.94736842e+00, 1.00000000e+00, -5.52631579e-01, -2.19459834e+00, 2.45622540e+00, -1.86599894e+00
2.36842105e+00, 1.00000000e+00, -1.31578947e-01, -2.48268698e+00, 6.22721971e-01, 3.40091845e+00
2.78947368e+00, 1.00000000e+00, 2.89473684e-01, -2.41620499e+00, -1.35074355e+00, 6.68195573e+00
3.21052632e+00, 1.00000000e+00, 7.10526316e-01, -1.99515235e+00, -3.01629246e+00, 7.27548248e+00
3.63157895e+00, 1.00000000e+00, 1.13157895e+00, -1.21952909e+00, -3.92604607e+00, 5.23419032e+00
4.05263158e+00, 1.00000000e+00, 1.55263158e+00, -8.93351801e-02, -3.63212567e+00, 1.36509289e+00
4.47368421e+00, 1.00000000e+00, 1.97368421e+00, 1.39542936e+00, -1.68665257e+00, -2.77047418e+00
4.89473684e+00, 1.00000000e+00, 2.39473684e+00, 3.23476454e+00, 2.35825193e+00, -4.85685319e+00
5.31578947e+00, 1.00000000e+00, 2.81578947e+00, 5.42867036e+00, 8.95046654e+00, -1.82406447e+00
5.73684211e+00, 1.00000000e+00, 3.23684211e+00, 7.97714681e+00, 1.85378700e+01, 1.01521937e+01
6.15789474e+00, 1.00000000e+00, 3.65789474e+00, 1.08801939e+01, 3.15683409e+01, 3.56505451e+01
6.57894737e+00, 1.00000000e+00, 4.07894737e+00, 1.41378116e+01, 4.84897580e+01, 8.00039353e+01
7.00000000e+00, 1.00000000e+00, 4.50000000e+00, 1.77500000e+01, 6.97500000e+01, 1.49299632e+02
}\loadedtable
\begin{tikzpicture}
\begin{axis}[
axis lines=center,
xmin=-0.75, xmax=18,
ymin=-75, ymax=85,
axis on top,
xtick distance=1,
ytick distance=10,
tick label style={font=\footnotesize, inner sep=1pt, fill=white},
no marks, samples=15, smooth,
every axis plot post/.append style={very thick},
legend entries={
$Q^{1/2,1/2,5}_{1}(x)$,
$Q^{1/2,1/2,5}_{2}(x)$
},
]
\addplot table[x index=0,y index=1] {\loadedtable};
% node [pos=0.3, below right] {$Q^{1/2,1/2,5}_{0}(x)$};
\addplot table[x index=0,y index=2] {\loadedtable};
%node [pos=0.3, below right] {$Q^{1/2,1/2,5}_{1}(x)$};
\addplot table[x index=0,y index=3] {\loadedtable};%node [pos=0.3, below right] {$Q^{1/2,1/2,5}_{2}(x)$};
\addplot table[x index=0,y index=4] {\loadedtable} node[anchor=west] at (axis cs:7.5,20) {$Q^{1/2,1/2,5}_{3}(x)$};
\addplot table[x index=0,y index=5] {\loadedtable};%node [pos=0.3, below right] {$Q^{1/2,1/2,5}_{4}(x)$};
\end{axis}
\end{tikzpicture}
\end{document}