模拟数据在 [0,1] 区间内绘制不正确

Question

我尝试在区间 [0, 1] 上绘制 2 个函数。其中一个函数可以运行，但我用于模拟数据的函数却不行。

\documentclass[8pt]{article}

\usepackage{tikz}
\usepackage{pgf}
\usepackage{pgfplots}
\usetikzlibrary{chains,shapes.multipart}
\usetikzlibrary{shapes,calc}
\usetikzlibrary{automata,positioning}
\usetikzlibrary{patterns}
\usepackage[latin1]{inputenc}
 \usepackage{verbatim}

\begin{document}

\begin{center}
\begin{tikzpicture}
\begin{axis}
\addplot[blue,domain=0:.95] {ln(1000000)/((1-x))};
\addplot[smooth,domain=0:.95] 
(0.01,15.4936011731625) -- 
(0.05,16.1972063938156) -- 
(0.1,15.6307188495994) -- 
(0.15,15.8221184986178) -- 
(0.2,17.3298915610067) -- 
(0.35,28.2033991515636) -- 
(0.4,22.9307031580538) -- 
(0.45,24.6029702750966) -- 
(0.5,24.9720082713757) -- 
(0.55,28.3029688145034) -- 
(0.6,31.5953977632453) -- 
(0.65,33.9497355091153) -- 
(0.7,45.5851026929449) -- 
(0.75,56.294973153621) -- 
(0.8,63.6406904051546) -- 
(0.85,65.5148971946328) -- 
(0.9,117.04824508907) -- 
(0.95,174.020252958231)  ;
\end{axis}
\end{tikzpicture}
\end{center}

\end{document}

Answer 1

您提供数据的格式错误：您可以使用\addplot [...] coordinates {(...) (...) (...)};（坐标之间没有破折号），或者更好的是，使用以下格式提供数据表

\addplot [...] table {
x0 y0
x1 y1
x2 y2
};

请注意，当您绘制坐标或表格中的数据时，该domain键不起作用，它仅适用于绘制函数时。

因此

\documentclass[8pt]{article}

\usepackage{pgfplots}

\begin{document}
\begin{tikzpicture}
\begin{axis}
\addplot[blue,domain=0:0.95] {ln(1000000)/((1-x))};
\addplot[smooth] coordinates {
(0.01,15.4936011731625) 
(0.05,16.1972063938156) 
(0.1,15.6307188495994) 
(0.15,15.8221184986178) 
(0.2,17.3298915610067) 
(0.35,28.2033991515636) 
(0.4,22.9307031580538) 
(0.45,24.6029702750966) 
(0.5,24.9720082713757) 
(0.55,28.3029688145034) 
(0.6,31.5953977632453) 
(0.65,33.9497355091153) 
(0.7,45.5851026929449) 
(0.75,56.294973153621) 
(0.8,63.6406904051546) 
(0.85,65.5148971946328) 
(0.9,117.04824508907) 
(0.95,174.020252958231)
};
\end{axis}
\end{tikzpicture}
\end{document}

或者

\documentclass[8pt]{article}

\usepackage{pgfplots}

\begin{document}
\begin{tikzpicture}
\begin{axis}
\addplot[blue,domain=0:0.95] {ln(1000000)/((1-x))};
\addplot[smooth] table{
0.01 15.4936011731625 
0.05 16.1972063938156 
0.1  15.6307188495994 
0.15 15.8221184986178 
0.2  17.3298915610067 
0.35 28.2033991515636 
0.4  22.9307031580538 
0.45 24.6029702750966 
0.5  24.9720082713757 
0.55 28.3029688145034 
0.6  31.5953977632453
0.65 33.9497355091153 
0.7  45.5851026929449
0.75 56.294973153621
0.8  63.6406904051546
0.85 65.5148971946328 
0.9  117.04824508907
0.95 174.020252958231
};
\end{axis}
\end{tikzpicture}
\end{document}