.tikz我创建了一个 Matlab 图形。我使用脚本将该图形转换为文件matlab2tikz。但是，我的 - 文件的图例.tikz与 Matlab 图形不同。例如，第二个图例条目指的是 + 标记。在图例中，应该只有 + 号。
但是，出于某种原因，每个图例条目中都有一行额外的线条，这使得所有内容都难以阅读。请参见下图（第二列的第一个条目 - 您几乎无法识别 +）。为什么会出现这些线条？
% This file was created by matlab2tikz.
%
%The latest updates can be retrieved from
% http://www.mathworks.com/matlabcentral/fileexchange/22022-matlab2tikz-matlab2tikz
%where you can also make suggestions and rate matlab2tikz.
%
\definecolor{mycolor1}{rgb}{0.00000,0.44700,0.74100}%
\definecolor{mycolor2}{rgb}{0.85000,0.32500,0.09800}%
\definecolor{mycolor3}{rgb}{0.92900,0.69400,0.12500}%
\definecolor{mycolor4}{rgb}{0.49400,0.18400,0.55600}%
\definecolor{mycolor5}{rgb}{0.46600,0.67400,0.18800}%
\definecolor{mycolor6}{rgb}{0.30100,0.74500,0.93300}%
%
\begin{tikzpicture}
\begin{axis}[%
width=4.0in,
height=2.0in,
at={(0.758in,2.013in)},
scale only axis,
xmin=0,
xmax=55,
xtick={5,10,15,20,25,30,35,40,45,50},
xticklabels={{1},{2},{3},{4},{5},{6},{7},{8},{9},{10}},
xlabel style={font=\color{white!15!black}},
xlabel={cases},
ymin=10,
ymax=60,
ylabel style={font=\color{white!15!black}},
ylabel={power [dBm]},
axis background/.style={fill=white},
axis x line*=bottom,
axis y line*=left,
xmajorgrids,
ymajorgrids,
legend style={at={(0.5,-0.2)}, anchor=north, legend columns=2, legend cell align=left, align=left, draw=white!15!black}
]
\addplot [color=mycolor1, line width=1.0pt, draw=none, mark size=3.0pt, mark=square, mark options={solid, red}]
table[row sep=crcr]{%
5 50.25\\
10 49.1\\
15 49.41\\
20 47.99\\
25 48.08\\
30 47.88\\
35 47.73\\
40 49.03\\
45 50.1\\
50 51.05\\
};
\addlegendentry{output power 1st}
\addplot [color=mycolor2, line width=1.0pt, draw=none, mark size=3.0pt, mark=+, mark options={solid, blue}]
table[row sep=crcr]{%
5 48.02\\
10 48.01\\
15 48\\
20 47.94\\
25 48.02\\
30 47.96\\
35 48.03\\
40 48.01\\
45 47.99\\
50 47.96\\
};
\addlegendentry{IMAL output power 1st}
\addplot [color=mycolor3, line width=1.0pt, draw=none, mark size=3.0pt, mark=o, mark options={solid, black}]
table[row sep=crcr]{%
5 41.947\\
10 44.268\\
15 46.084\\
20 47.385\\
25 48.036\\
30 47.577\\
35 46.571\\
40 45.09\\
45 44.637\\
50 43.57\\
};
\addlegendentry{MVTRAD output power 1st}
\addplot [color=mycolor4, line width=1.0pt, draw=none, mark size=3.0pt, mark=diamond, mark options={solid, red}]
table[row sep=crcr]{%
5 40.67\\
10 39.74\\
15 39.71\\
20 36.96\\
25 37.54\\
30 37.12\\
35 36.99\\
40 39.74\\
45 40.71\\
50 37.87\\
};
\addlegendentry{IM power left}
\addplot [color=mycolor5, line width=1.0pt, draw=none, mark size=3.0pt, mark=x, mark options={solid, blue}]
table[row sep=crcr]{%
5 37.3\\
10 37.46\\
15 37.47\\
20 37.49\\
25 37.43\\
30 37.51\\
35 37.38\\
40 37.45\\
45 37.47\\
50 37.61\\
};
\addlegendentry{IMAL IM power left}
\addplot [color=mycolor6, line width=1.0pt, draw=none, mark size=3.0pt, mark=asterisk, mark options={solid, black}]
table[row sep=crcr]{%
5 12.903\\
10 22.986\\
15 29.028\\
20 33.666\\
25 36.422\\
30 37.281\\
35 37.006\\
40 36.143\\
45 34.935\\
50 33.81\\
};
\addlegendentry{MVTRAD IM power left}
\end{axis}
\end{tikzpicture}%
答案1
我猜这是 matlab2tikz 的一个问题。
获得所需内容的最简单方法是将选项添加only marks到图例样式中，即更改行
legend style={at={(0.5,-0.2)}, anchor=north, legend columns=2, legend cell align=left, align=left, draw=white!15!black}
到
legend style={only marks, at={(0.5,-0.2)}, anchor=north, legend columns=2, legend cell align=left, align=left, draw=white!15!black}
Matlab2tikz 似乎使用选项 删除了图线。如果使用draw=none选项而不是in every ，则图例看起来应该如此。only marksdraw=none\addplot [...]