如何为图表内的区域添加阴影

Question

如何使用以下代码对图形的特定区域进行着色

    \documentclass{beamer}
\usepackage{tikz}
\usepackage{pgfplots}
\begin{document}
\begin{frame}
\frametitle{}
\begin{tikzpicture}
\draw(0,0)--(6,0);
\draw(0,0)--(0,3);
\draw [blue] (.1,.3) to [out=0,in=180, looseness=1.] +(0.:.2cm)  to [out=0,in=180, looseness=.68] +(35:3.cm)  to [out=0,in=180, looseness=.68] +(-35:3.cm)  to [out=0,in=180, looseness=1.] +(0.:.2cm);
\end{tikzpicture}
\end{frame}
\end{document}

产生以下色调

Answer 1

如果你用 pgfplots 绘制了（高斯）函数，事情会更加简单。但是，由于你没有，所以不需要加载 pgfplots 包，你可以用 Ti 来做钾仅限 Z。

\documentclass{beamer}
\usepackage{tikz}
\usetikzlibrary{patterns}
\begin{document}
\begin{frame}
\frametitle{}
\begin{tikzpicture}
\draw(0,0)--(6,0);
\draw(0,0)--(0,3);
\draw[blue] (.1,.3) to [out=0,in=180, looseness=1.] +(0.:.2cm)  to [out=0,in=180, looseness=.68] +(35:3.cm)  to [out=0,in=180, looseness=.68] +(-35:3.cm)  to [out=0,in=180, looseness=1.] +(0.:.2cm);
\path[clip] (.1,-1)-- (.1,.3) to [out=0,in=180, looseness=1.] +(0.:.2cm)  to [out=0,in=180, looseness=.68] +(35:3.cm)  to [out=0,in=180, looseness=.68] +(-35:3.cm)  to [out=0,in=180, looseness=1.] +(0.:.2cm)
 -- (5.4,-1) -- cycle;
\only<1>{
\pgfmathsetmacro{\DeltaX}{0.6}
\filldraw[pattern=north east lines] (0.1,0) rectangle (2.75-\DeltaX,2.1) (2.75+\DeltaX,2.1) rectangle (5.4,0);
\draw (2.75-\DeltaX,0.1) -- (2.75-\DeltaX,-0.1) node[below] {-1}
 (2.75+\DeltaX,0.1) -- (2.75+\DeltaX,-0.1) node[below] {+1};
\draw (2.75,2.1)-- (2.75,-0.1) node[below]{0};
}
\only<2>{
\filldraw[pattern=north east lines] (1.25,0) rectangle (2.75,2.1);
\draw (1.25,-0.1) node[below] {14000}  -- (1.25,0.88) -- (2.75,0.88);
\draw (2.75,-0.1) node[below] {16000}  -- (2.75,0.88+0.56) -- (1.25,0.88+0.56);
}
\only<3>{
\pgfmathsetmacro{\DeltaX}{1}
\filldraw[pattern=north east lines] (0,0) rectangle (2.75+\DeltaX,2.1);
\draw (2.75+\DeltaX,0) -- (2.75+\DeltaX,1.8) -- (1,1.8);
\draw (2.75,2.1)-- (2.75,0);
}
\only<4>{
\pgfmathsetmacro{\DeltaX}{0.6}
\fill[pattern=north east lines] (2.75-0.5*\DeltaX,0) rectangle (2.75+\DeltaX,2.1);
\draw (2.75-0.5*\DeltaX,2.1) -- (2.75-0.5*\DeltaX,-0.1) node[below left] {-0.5}
 (2.75+\DeltaX,2.1) -- (2.75+\DeltaX,-0.1) node[below right] {+1};
\draw (2.75,2.1)-- (2.75,-0.1) node[below]{0};
\draw (2.75-0.5*\DeltaX,1.5) -- (2.75+\DeltaX,1.5);
}
\end{tikzpicture}
\end{frame}
\end{document}