两个函数之间的菱形图案

Question

我希望两个红色函数之间有一个菱形图案（或另一个图案）。此外，如果$H_{S_2}(\beta)$在它的左侧显示虚线样式（就像在图例中通常所做的那样），那就太好了。在左侧应显示相同的图例样式标识（即包含的图案）$W_{S_1}(\beta)$。

\documentclass[11pt,fleqn,numbers=noenddot]{scrartcl}    
\usepackage[ngerman]{babel}
\usepackage{pgfplots,pgfplotstable}
\usepackage[locale=DE]{siunitx}
\usepackage{pdflscape}
\usepackage{nicefrac}

\pgfplotsset{
    compat=newest,
    xlabel near ticks,
    ylabel near ticks,
    myplot/.style={smooth,tension=0.5,mark=none,very thick}
}    
\begin{document}    
\begin{landscape}
\begin{tikzpicture}
\begin{axis}[
 width=1.5\textwidth,height=0.9\textheight,
 axis x line=bottom,
 xmin=0,
 xmax=1,
 xtick={0,0.1,0.2,0.3,0.4,0.5,0.6,0.7,0.8,0.9,1},
 axis y line=left,
 ymin=70,
 ymax=120,
 ytick={75,85,95,105,115},
 ylabel={$w$},
 xlabel={$\beta$},
 %grid=major,
 legend style={
   at={(current bounding box.north-|current axis.east)},
   anchor=east,
   legend columns=2
}
]
%W_1 upper

\addplot+[color=red,dotted,myplot ]
 coordinates {
 (0, 100.3)
 (0.1,         98)
 (0.2,     95.5)
 (0.3,      92.7)
 (0.4,      89.7)
 (0.5,      86.4)
 (0.6,      82.7)
 (0.67,      80)    
}
 ;
\addplot[red,domain=0:0.67]{80};

\node at (0.2,90) {  \textcolor{red}{$W_{S_1}(\beta)$}};

\node at (0.2,100) { $H_{S_2}(\beta)$};

\end{axis}
\end{tikzpicture}
\end{landscape}

\end{document} 

我怎样才能做到这一点？

Answer 1

使用fillbetween和patterns库：

\documentclass[11pt,fleqn,numbers=noenddot]{scrartcl}    
\usepackage[ngerman]{babel}
\usepackage{pgfplots,pgfplotstable}
\usepackage[locale=DE]{siunitx}
\usepackage{pdflscape}
\usepackage{nicefrac}

\pgfplotsset{
    compat=newest,
    xlabel near ticks,
    ylabel near ticks,
    myplot/.style={smooth,tension=0.5,mark=none,very thick}
}    

\usepgfplotslibrary{fillbetween}
\usetikzlibrary{patterns}

\begin{document}    
\begin{landscape}
\begin{tikzpicture}
\begin{axis}[
 width=1.5\textwidth,height=0.9\textheight,
 axis x line=bottom,
 xmin=0,
 xmax=1,
 xtick={0,0.1,0.2,0.3,0.4,0.5,0.6,0.7,0.8,0.9,1},
 axis y line=left,
 ymin=70,
 ymax=120,
 ytick={75,85,95,105,115},
 ylabel={$w$},
 xlabel={$\beta$},
 %grid=major,
 legend style={
   at={(current bounding box.north-|current axis.east)},
   anchor=east,
   legend columns=2
}
]
%W_1 upper

\addplot+[color=red,dotted,myplot,name path=A]
 coordinates {
 (0, 100.3)
 (0.1,         98)
 (0.2,     95.5)
 (0.3,      92.7)
 (0.4,      89.7)
 (0.5,      86.4)
 (0.6,      82.7)
 (0.67,      80)    
}
 ;
\addplot[red,domain=0:0.67,name path=B]{80};

\addplot[pattern=crosshatch dots,pattern color=red] fill between[of=A and B];

\node at (0.2,90) {  \textcolor{red}{$W_{S_1}(\beta)$}};

\node at (0.2,100) { $H_{S_2}(\beta)$};

\end{axis}
\end{tikzpicture}
\end{landscape}

\end{document}