![x 轴坐标未出现](https://linux22.com/image/367542/x%20%E8%BD%B4%E5%9D%90%E6%A0%87%E6%9C%AA%E5%87%BA%E7%8E%B0.png)
我有一个如下所示的 tikzpicture:
\begin{center}
\begin{figure*}[tp]
\centering
\begin{subfigure}[b]{0.5\textwidth}
\begin{tikzpicture}[scale=0.7]
\begin{axis}[
ylabel={Speedup},
xlabel = {Cores},
bar width=7mm, y=4mm,
symbolic x coords={8,16,32,64,128,256,512},
xtick=data,
%ytick={0,500,1000},
%log basis y=10,
x tick label style={},
nodes near coords align={vertical},
legend cell align=left,
legend style={
at={(1,1.05)},
anchor=south east,
column sep=1ex
}
]
\addplot [mark=diamond] coordinates{ %small
(8,4.5) (16,6.2) (32,8.4) (64,9.6)
};
\addplot [mark=o, color=blue] coordinates { %medium
(64,16.8) (128,15.6) (256,16.8) (512,16.5)
};
\legend{Small, Medium}
\end{axis}
\end{tikzpicture}% pic 2
\caption{\label{fig:speedup:small}}
\end{subfigure}
\end{figure*}
\end{center}
输出结果如图所示。
看起来 x 坐标 128,256,512 没有出现在图中。有人知道我做错了什么吗?
提前致谢。
答案1
xtick=data
\addplot
只从轴上的第一个位置获取数据。在这种情况下,只需删除xtick=data
即可解决问题,我认为更通用的解决方案是将其替换为xtick distance=1
。
\documentclass{article}
\usepackage{subcaption}
\usepackage{pgfplots}
\pgfplotsset{compat=1.15}
\begin{document}
\begin{figure}
\begin{subfigure}{0.5\textwidth}
\centering
\begin{tikzpicture}
\begin{axis}[
small, % added
width=\linewidth, % added
ylabel={Speedup},
xlabel = {Cores},
symbolic x coords={8,16,32,64,128,256,512},
% not needed, but will force ticks at all data points
% as symbolic coords have a unit distance of 1
xtick distance=1,
legend cell align=left,
legend style={
at={(1,1.05)},
anchor=south east,
column sep=1ex,
font=\small
}
]
\addplot [mark=diamond] coordinates{ %small
(8,4.5) (16,6.2) (32,8.4) (64,9.6)
};
\addplot [mark=o, color=blue] coordinates { %medium
(64,16.8) (128,15.6) (256,16.8) (512,16.5)
};
\legend{Small, Medium}
\end{axis}
\end{tikzpicture}
\end{subfigure}
\end{figure}
\end{document}