LaTeX图表Y轴小数显示格式调整求助：需按指定数值展示

你设置的Y轴刻度是0.004、0.005……0.018这类三位小数，但当前代码里仅用了/pgf/number format/fixed，PGFPlots会自动省略末尾的零，导致像0.01这类刻度只显示成0.01，不符合你想要的统一三位小数格式。

只需修改yticklabel style的设置，加上强制小数位数和补零的参数即可：

yticklabel style={/pgf/number format/fixed, /pgf/number format/precision=3, /pgf/number format/fixed zerofill},

修改后的完整代码如下：

\documentclass{article}
\usepackage{graphicx} % Required for inserting images

\usepackage{pgfplots}
\begin{document}

\begin{figure} 
\centering
\begin{tikzpicture} [style={outer sep=5}]
\begin{axis}[ymin=0.004,ymax=0.018, xmin=15, xmax=50,
xlabel= $Number of Nodes$, ylabel = $end-to-end (sec)$,
xtick={15,20,...,50},
ytick={0.004,0.005,...,0.018},
yticklabel style={/pgf/number format/fixed, /pgf/number format/precision=3, /pgf/number format/fixed zerofill},
grid={major},clip=false,grid style={dashed},
title={},
legend style={at={(1.2 ,1)},anchor=north},
font=\footnotesize]

% TAODV
\addplot[color=blue, mark=*, samples=10] [error bars/.cd,y dir=both, y explicit] coordinates {
(15, 0.0072) +-(0.001, -0.001)
(20, 0.0079) +-(0.001, -0.001)
(25, 0.0092) +-(0.001, -0.001)
(30, 0.01) +-(0.001, -0.001)
(35, 0.013) +-(0.0018, -0.0018)
(40, 0.0137) +-(0.001, -0.001)
(45, 0.015) +-(0.001, -0.001)
(50, 0.0168)+-(0.001, -0.001)
};

% AODV
\addplot[color=red, mark=*, samples=10] [error bars/.cd,y dir=both, y explicit] coordinates {
(15, 0.0052) +-(0.001, -0.001)
(20, 0.0057) +-(0.001, -0.001)
(25, 0.0067) +-(0.001, -0.001)
(30, 0.0074) +-(0.001, -0.001)
(35, 0.0082) +-(0.0018, -0.0018)
(40, 0.0095) +-(0.001, -0.001)
(45, 0.01) +-(0.001, -0.001)
(50, 0.0109) +-(0.001, -0.001)
};

\legend{
    $TAODV$,
    $AODV$
}
\end{axis}
\end{tikzpicture}
\caption[End-to-end delay of TAODV vs. AODV]{End-to-end delay of TAODV vs. AODV with \%95 confidence interval}
\end{figure}

\end{document}

其中：

• /pgf/number format/precision=3：指定刻度显示3位小数
• /pgf/number format/fixed zerofill：自动填充末尾的零，保证所有刻度的小数位数统一

内容的提问来源于stack exchange，提问作者Ali Alzahrani