我如何绘画
\documentclass[12pt,a4paper]{article}
\usepackage{graphicx}
\usepackage{circuitikz}
\usepackage[utf8x]{inputenc}
\usepackage{tikz}
\begin{document}
\begin{circuitikz}
\node (A) at (-1,0) {$a$};
\node (1) at (0,1) {$1$};
\node (C) at (0,0) {$c$};
\node (B) at (1,0) {$b$};
\node (0) at (0,-1) {$0$};
\draw
(A) -- ++ to [short, o-*] ++ (1)
to [short, o-*] ++ (B)
to [short, o-*] ++ (0)
;
\end{circuitikz}
\end{document}
我首先尝试用 绘制此图tikzpicture，但圆圈不可用tikzpicture（我认为）。所以接下来我尝试用circuitikz。但我无法连接节点。
答案1
使用纯净的tikz：
\documentclass[12pt,margin=3.141592]{standalone}
\usepackage{tikz}
\begin{document}
\begin{tikzpicture}[
C/.style = {circle, draw, fill=white, inner sep=1mm,
label=#1,
node contents={}},
every label/.append style = {inner sep=2pt, font=\small}
]
\draw (-1,0) node [C=left:$a$] -- (0,1)
node (c1) [C=$1$] -- (1,0)
node [C=right:$b$] -- (0,-1)
node (c0) [C=below:0] -- cycle
;
\draw (c1) -- (0,0) node[C=left:$c$]
-- (c0);
\end{tikzpicture}
\end{document}
答案2
使用pstricks，它需要一个非常短的代码：
\documentclass[border=6pt]{standalone}
\usepackage{pst-eucl}
\begin{document}
\begin{pspicture}(-1.5,-1.5)(1.5,1.5)
\pstGeonode[PointSymbol=o, PosAngle={180,180,180}](-1,0){a}(0,0){c}(1,0){b}
\pstGeonode[PointSymbol=o, PointName={1,0}, PosAngle={90,-90}](0,1.1){i}(0,-1.1){j}
\foreach \s/\t in{a/i, i/b, b/j, j/a, i/c, c/j}{\ncline[linewidth=0.4pt, nodesep=1.8pt]{\s}{\t}}
\end{pspicture}
\end{document}
答案3
使用纯 TikZ/Mathcha 编辑器：
%% Compile and read me!
\documentclass[a4paper,12pt]{article}
\usepackage{tikz}
\begin{document}
\tikzset{every picture/.style={line width=0.75pt}} %set default line width to 0.75pt
\begin{tikzpicture}[x=0.75pt,y=0.75pt,yscale=-1,xscale=1]
%uncomment if require: \path (0,434); %set diagram left start at 0, and has height of 434
%Straight Lines [id:da20828161722683225]
\draw (226.89,86.8) -- (226.89,237.8) ;
%Shape: Diamond [id:dp9171337707281815]
\draw (226.89,86.8) -- (288.98,162.3) -- (226.89,237.8) -- (164.8,162.3) -- cycle ;
%Shape: Circle [id:dp20974285465516052]
\draw [fill={rgb, 255:red, 255; green, 255; blue, 255 } ,fill opacity=1 ] (158.9,162.3) .. controls (158.9,159.04) and (161.54,156.4) .. (164.8,156.4) .. controls (168.06,156.4) and (170.7,159.04) .. (170.7,162.3) .. controls (170.7,165.56) and (168.06,168.2) .. (164.8,168.2) .. controls (161.54,168.2) and (158.9,165.56) .. (158.9,162.3) -- cycle ;
%Shape: Circle [id:dp8683918561204362]
\draw [fill={rgb, 255:red, 255; green, 255; blue, 255 } ,fill opacity=1 ] (220.89,86.8) .. controls (220.89,83.54) and (223.53,80.9) .. (226.79,80.9) .. controls (230.05,80.9) and (232.69,83.54) .. (232.69,86.8) .. controls (232.69,90.06) and (230.05,92.7) .. (226.79,92.7) .. controls (223.53,92.7) and (220.89,90.06) .. (220.89,86.8) -- cycle ;
%Shape: Circle [id:dp39794595778692865]
\draw [fill={rgb, 255:red, 255; green, 255; blue, 255 } ,fill opacity=1 ] (220.99,236.8) .. controls (220.99,233.54) and (223.63,230.9) .. (226.89,230.9) .. controls (230.15,230.9) and (232.79,233.54) .. (232.79,236.8) .. controls (232.79,240.06) and (230.15,242.7) .. (226.89,242.7) .. controls (223.63,242.7) and (220.99,240.06) .. (220.99,236.8) -- cycle ;
%Shape: Circle [id:dp9061896064627495]
\draw [fill={rgb, 255:red, 255; green, 255; blue, 255 } ,fill opacity=1 ] (281.08,163.2) .. controls (281.08,159.94) and (283.73,157.3) .. (286.98,157.3) .. controls (290.24,157.3) and (292.88,159.94) .. (292.88,163.2) .. controls (292.88,166.46) and (290.24,169.1) .. (286.98,169.1) .. controls (283.73,169.1) and (281.08,166.46) .. (281.08,163.2) -- cycle ;
%Shape: Circle [id:dp9109747529820003]
\draw [fill={rgb, 255:red, 255; green, 255; blue, 255 } ,fill opacity=1 ] (220.99,162.3) .. controls (220.99,159.04) and (223.63,156.4) .. (226.89,156.4) .. controls (230.15,156.4) and (232.79,159.04) .. (232.79,162.3) .. controls (232.79,165.56) and (230.15,168.2) .. (226.89,168.2) .. controls (223.63,168.2) and (220.99,165.56) .. (220.99,162.3) -- cycle ;
% Text Node
\draw (222,60.4) node [anchor=north west][inner sep=0.75pt] {$1$};
% Text Node
\draw (222,249.4) node [anchor=north west][inner sep=0.75pt] {$0$};
% Text Node
\draw (141,155) node [anchor=north west][inner sep=0.75pt] {$a$};
% Text Node
\draw (205,155) node [anchor=north west][inner sep=0.75pt] {$c$};
% Text Node
\draw (267,155) node [anchor=north west][inner sep=0.75pt] {$b$};
\end{tikzpicture}
\end{document}
