LaTeX forum ⇒ Graphics, Figures & Tables ⇒ tikZ | Diagram for Set Relation and Functions Topic is solved

[sachinrajsharma]

Hi,

the introduced source code is not giving output and showing some error.

Code: [Select all] [Expand/Collapse] [Download] (untitled.tex) Open in Overleaf

\documentclass[10pt,a4paper]{article}
\usepackage{tikz}
\usepackage{pgfplots}
 
 
\begin{document}
 
One - One \\
\begin{tikzpicture}
 
 
\pgfpathellipse{\pgfpoint{1cm}{0cm}}
{\pgfpoint{0.2cm}{2cm}} 
{\pgfpoint{-0.7cm}{0.7cm}}
\pgfusepath{draw}
\pgfpathellipse{\pgfpoint{5cm}{0cm}}
{\pgfpoint{0.2cm}{2cm}}
{\pgfpoint{-0.7cm}{0.7cm}}
\pgfusepath{draw}
\draw [->](1,1.8)--(5,1.8)
 
\draw (1,1)--(5,1)
(1,1)node[left]{2};
\draw (1,0)--(5,0)
(1,0)node[left]{3};
\draw (1,-1)--(5,-1)
(1,-1)node[left]{4};
 
\end{tikzpicture}
 
\end{document}

Request you to please help.


Regards,
Sachin

[kaiserkarl13]

I got this to work by commenting out the pgfplots package and adding a semicolon at the end of line 20.

[sachinrajsharma]

thanks a lot ...its working now..thanks again..

Sachin

[localghost]

The pgfplots package is not the culprit. kaiserkarl13 already pointed out what to do. But there is a much smarter way to get such set projections by using proper tikZ syntax and respective libraries.

Code: [Select all] [Expand/Collapse] [Download] (untitled.tex) Open in Overleaf

\documentclass[11pt]{article}
\usepackage{tikz}
\usetikzlibrary{fit,shapes}
 
\begin{document}
   \begin{tikzpicture}[
     >=stealth,
     bullet/.style={
       fill=black,
       circle,
       minimum width=1pt,
       inner sep=1pt
     },
     projection/.style={
       ->,
       thick,
       shorten <=2pt,
       shorten >=2pt
     },
     every fit/.style={
       ellipse,
       draw,
       inner sep=0pt
     }
   ]
     \foreach \y/\l in {1/d,2/c/,3/b,4/a}
       \node[bullet,label=left:$\l$] (a\y) at (0,\y) {};
 
     \foreach \y/\l in {1/4,2/3,3/2,4/1}
       \node[bullet,label=right:$\l$] (b\y) at (4,\y) {};
 
     \node[draw,fit=(a1) (a2) (a3) (a4),minimum width=2cm] {} ;
     \node[draw,fit=(b1) (b2) (b3) (b4),minimum width=2cm] {} ;
 
     \draw[projection] (a1) -- (b4);
     \draw[projection] (a2) -- (b2);
     \draw[projection] (a3) -- (b1);
     \draw[projection] (a4) -- (b3);
   \end{tikzpicture}
\end{document}

For details please refer to the package manual. The output is attached.


Thorsten