☰

绘制小数点后第九位的值

tag-icon • tag-icon pgfplots
绘制小数点后第九位的值

pgfplots我正在尝试使用仅在小数点后 9 位发生变化的变量绘制图表。但是，我无法让图表正确显示每个单独的点。我尝试了domain y和y tick，但没有成功。

代码如下：

\begin{tikzpicture}
    \begin{axis}[
        axis lines = left,
        xlabel = {Number of elements},
        ylabel = {$V[\si{\volt}]$},
        %ytick={0.0042280430,0.0042280440,0.0042280450,0.0042280460,0.0042280470}
    ]
    \addplot [
        color=black,
        mark=*
        %domain y=(0.0042280435):(0.0042280470)
]
        coordinates {
        (980,  0.0042280466)
        (1247, 0.0042280462)
        (2876, 0.0042280438)
        (4032, 0.0042280457)
        (5264, 0.0042280462)
        (5308, 0.0042280462)
        };
    \end{axis}
\end{tikzpicture}

这就是我所拥有的：

我拥有的

这正是我所寻求的：

我正在寻找

我猜是因为 Latex 在某个点之后无法识别小数。那么我该如何强制执行呢？

提前致谢！

答案1

就是这样。准确度有问题，所以你必须取较小的数字。希望你喜欢它！

\documentclass[margin=3mm]{standalone}
\usepackage{pgfplots,pgfplotstable}
\pgfplotsset{compat=newest}
\usepackage{siunitx}

\pgfplotstableread[col sep=comma]{
N,    V
980.,  42280466.
1247., 42280462.
2876., 42280438.
4032., 42280457.
5264., 42280462.
5308., 42280462.
}\tableNV

\begin{document}
\begin{tikzpicture}
\pgfmathsetmacro{\diff}{42280430.}
\begin{axis}[
axis lines = left,
height=9cm,width=12cm,
xlabel = {Number of elements},
ylabel = {$V[\si{\volt}]$},
/pgf/number format/precision=10,
/pgf/number format/fixed,
/pgf/number format/fixed zerofill,
/pgfplots/xticklabel style={/pgf/number format/.cd,precision=0,1000 sep={},},
ytick={5,10,...,40},yticklabels={0.0042280435,0.0042280440,0.0042280445,0.0042280450,0.0042280455,0.0042280460,0.0042280465,0.0042280470},
xtick={930,1430,...,5430},
domain=9.3e2:5.43e3,
xmin=9.3e2,xmax=5.43e3,
ymin=5.,ymax=40.,
]
\addplot [color=black,only marks,mark=*,mark size=1pt,domain=9.3e2:5.43e3] table[y expr=\thisrow{V}-\diff] {\tableNV};
\end{axis}
\end{tikzpicture}

\end{document}

例子

相关内容