How to draw a graph of a specific form in LaTeX

Question

How can I draw a graph like this in LaTeX using pgfplot package?

Hi, welcome to TeX.SX! Have you tried anything? If so, can you show us the code you have so far? — Torbjørn T., Jun 13 '16 at 08:26
So far, I have been trying the usual one \begin{tikzpicture} \begin{axis}[ axis lines = left, xlabel = $Tails(x)$, ylabel = $Heads(y)$, ]
\addplot [ domain=0:15, samples=15, ] {- x + 10}; \addlegendentry{$x+y=n$} Thank you — Ragnar, Jun 13 '16 at 08:52
I think you might find useful How to make a figure with moving arrows? — Claudio Fiandrino, Jun 13 '16 at 08:52
You can edit your questions, and for code it's much better if you add it to the question itself, rather than in comments. For syntax highlighting, select the code and hit Ctrl + K (or click the button marked {} above the text field). — Torbjørn T., Jun 13 '16 at 08:57
@Ragnar: Excellent. Please feel free to post the code of the solution as answer :) — Claudio Fiandrino, Jun 13 '16 at 08:58

score 3 · Answer 1 · answered Jun 13 '16 at 20:48

3

I have edited a little bit on the code given by @Claudio. and I came up with this solution.

\documentclass[10pt]{article}
\usepackage{pgfplots}
\begin{document}
     \begin{tikzpicture}

    \draw[->, thick](0,0)--node[below]{$Tails(x)$}(5,0) ;
    \draw[->, thick](0,0)--node[left]{$Heads(y)$}(0,5);
    \draw[- ] (4,0)node[below]{$(n,0)$}--(0,4) node[right] {$(0,n)$};


    \node[right] at (3.6,0.4) {$(n-1,1)$};
    \node[right] at (0.4,3.6) {$(1,n-1)$};
    \node[right] at (0.8,3.2) {$(2,n-2)$};
    \node[right] at (3,3) {$\mathbf{x+y=n}$};

    \fill (0,4) circle (1.5pt);
    \fill (4,0) circle (1.5pt);
    \fill (3.6,0.4) circle (1.5pt);
    \fill (0.4,3.6) circle (1.5pt);
    \fill (0.8,3.2) circle (1.5pt);

    \end{tikzpicture}
\end{document}

answered Jun 13 '16 at 20:48

Ragnar

49

\usepackage{amsmath} and then $\text{Tails}(x)$ , $\text{Heads}(y)$ . – Torbjørn T. Jun 13 '16 at 21:01
sorry for not mentioning \usepackage{amsmath} but the other two are done in a different way, as repositioned nodes. @TorbjørnT. – Ragnar Jun 13 '16 at 21:11
1

My main point was that you don't want to write Tails and Heads in math mode, they are words, not a string of variables. I only mentioned amsmath because it defines \text. – Torbjørn T. Jun 13 '16 at 21:14
Alright, but '\mathbf' is also from 'amsmath ' package, if I am not wrong. – Ragnar Jun 13 '16 at 21:18
1

No, you don't need amsmath to use \mathbf (which your example proves, it works without amsmath). Don't think amsmath defines any font styles at all actually, but for \mathbb for example you need amsfonts. – Torbjørn T. Jun 13 '16 at 21:26

score 1 · Answer 2 · answered Jun 13 '16 at 19:04

Your comment is almost a solution. You might want to use axis lines=middle to match the sketch from your question.

\documentclass{article}
\usepackage{pgfplots}
\begin{document}
\begin{tikzpicture}
  \begin{axis}[axis lines=middle,
    xlabel=$\mathrm{Tails}(x)$,
    ylabel=$\mathrm{Heads}(y)$,
    domain=0:15,no marks]
    \addplot {-x + 10};
    \addlegendentry{$x+y=n$}
  \end{axis}
\end{tikzpicture}
\end{document}

How to draw a graph of a specific form in LaTeX

2 Answers2