![使用 Tikz 绘制](https://linux22.com/image/446333/%E4%BD%BF%E7%94%A8%20Tikz%20%E7%BB%98%E5%88%B6.png)
我(几乎)第一次尝试使用 tikz 上的一些教程来重现此图形,但距离最终结果还很远。我该如何实现呢?这是我的代码
\documentclass{article}
\usepackage{tikz}
\begin{document}
\usetikzlibrary{arrows}
\begin{tikzpicture}
\draw[*-*,thick,circle](0,0) -- (4,0) ;
\draw[-latex,thin] (0,0) -- (8,0) ;
\draw[-latex,thin] (0,0) -- (0,8) ;
\filldraw[fill=gray!20]
(0,0) -- (0,6) -- (2,6) -- (4,3) -- (4,0) -- (0,0);
\draw (2,3) node[text width=2cm,text ragged] {Feasible region};
\end{tikzpicture}
\end{document}
答案1
这是一个解决方案(可以优化):
\documentclass[tikz,border=3.14mm]{standalone}
\usetikzlibrary{arrows.meta,positioning}
\begin{document}
\begin{tikzpicture}
\tikzset{
num/.style={draw,circle,inner sep=1pt},
arr/.style={latex-,shorten <= 2.5pt}}
\draw[fill=gray!20]
(0,0) -- (0,6) -- (2,6) -- (4,3) -- (4,0) -- (0,0);
\draw (2,3) node[text width=2cm,align=center] {Feasible\\region};
\draw[latex-latex,thin] (0,7) node[left]{$x_2$} |- (7,0) node[below]{$x_1$};
\foreach \i in {1,...,6}
{
\draw (\i,0) --++ (0,5pt);
\draw (0,\i) --++ (5pt,0);
}
\fill (0,0) circle (2pt) node [num, above right = 5pt and 5pt] {0} node [left] {$(0,0)$};
\fill (0,6) circle (2pt) node [num, below right = 5pt and 5pt] {1} node [left] {$(0,6)$};
\fill (2,6) circle (2pt) node [num, below left = 5pt and 5pt] {2} node [above right] {$(2,6)$};
\fill (4,3) circle (2pt) node [above right] {$(4,3)$};
\fill (4,0) circle (2pt) node [below] {$(4,0)$};
\draw[arr] (0,0) --++ (0.5,-0.5) node[right] {$Z=0$};
\draw[arr] (0,6) --++ (0.5,0.5) node[right] {$Z=30$};
\draw[arr] (2,6) --++ (0.5,-0.25) node[right] {$Z=36$};
\draw[arr] (4,3) --++ (0.5,-0.5) node[right] {$Z=27$};
\draw[arr] (4,0) --++ (0.5,0.5) node[right] {$Z=12$};
\end{tikzpicture}
\end{document}