Graphics, Figures & Tables ⇒ Markov Latex

[Estabilo]

Hello people

how to do this Markov diagram in Latex?

Thankss

[Stefan Kottwitz]

Like this?

Code: Select all

\documentclass[tikz, border=10pt]{standalone}
\usetikzlibrary{calc, automata, chains, arrows.meta}
\begin{document}
\begin{tikzpicture}[start chain = going right,
  -Triangle, every loop/.append style = {-Triangle}]
  \foreach \i in {0,...,4} 
    \node[state, on chain]  (\i) {\i};
  \foreach \i in {0,...,3} {
    \draw let \n1 = { int(\i+1) } in
      (\i)  edge[bend left] (\n1)
      (\n1) edge[bend left] (\i);
  }
  \foreach \i in {1,...,3}
    \draw  (\i) edge[loop below] (\i);
  \draw    (0)  edge[loop left]   (0);
  \draw    (4)  edge[loop right]  (4);
\end{tikzpicture}
\end{document}

tikz-chain-diagram.png (9.02 KiB) Viewed 13611 times

Stefan

[Estabilo]

yesssssss is perfect!!!!!

But one thing more, I would to writte text or number above the arrows.

I do not know how to do it.

Can you help me?

Thanks

[Stefan Kottwitz]

Sure, this is easy with nodes on the edges.

I just need to go to sleep now, I will write again tomorrow.

Stefan

[Estabilo]

Okey Stefan ,I wait

[Estabilo]

all okey Stefan?

[Stefan Kottwitz]

I just have few time. Don't worry, I like TikZ questions.

It's actually simple: the new quotes library, which comes with TikZ 3.0 or later, brings an easy syntax instead of adding nodes:

Code: Select all

\draw  (0)  edge[loop left, "left"]   (0);
\draw  (4)  edge[loop right, "right"]  (4);

A user variable can also be added for text or numbers in a for loop:

Code: Select all

\foreach \i/\txt in {1/here,2/there,3/here too}
  \draw  (\i) edge[loop below, "\txt"] (\i);

Complete example - note that I added the quotes library at the beginning:

Code: Select all

\documentclass[tikz, border=10pt]{standalone}
\usetikzlibrary{calc, automata, chains, arrows.meta, quotes}
\begin{document}
\begin{tikzpicture}[start chain = going right,
  -Triangle, every loop/.append style = {-Triangle}]
  \foreach \i in {0,...,4} 
    \node[state, on chain]  (\i) {\i};
  \foreach \i in {0,...,3} {
    \draw let \n1 = { int(\i+1) } in
      (\i)  edge[bend left] (\n1)
      (\n1) edge[bend left] (\i);
  }
  \foreach \i/\txt in {1/here,2/there,3/here too}
    \draw  (\i) edge[loop below, "\txt"] (\i);
  \draw    (0)  edge[loop left, "left"]   (0);
  \draw    (4)  edge[loop right, "right"]  (4);
\end{tikzpicture}
\end{document}

markov-chain.png (16.76 KiB) Viewed 13571 times

Stefan

[Estabilo]

Sorry Stefan, I have seen the code during all day and I have a problem that I don`t know solve
If you run/execute this code, you will se the strange problem

Code: Select all

\documentclass[12pt,a4paper,tikz,border=10pt]{article}
\usepackage[spanish]{babel}
\usepackage[utf8]{inputenc}
\usepackage{amsmath}
\usepackage{amsfonts}
\usepackage{amssymb}
\usepackage{listings}
\usepackage{fancybox}
\usepackage{fancyvrb}
\usepackage{enumerate} 
\usepackage{pstricks}
\usepackage{graphicx}
\usepackage{enumitem}
\usepackage{parskip}


\usepackage{tikz}
\usetikzlibrary{calc, automata, chains, arrows.meta, quotes}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\usepackage[left=3cm,right=2cm,top=1cm,bottom=2cm]{geometry}

\title{Cadenes de Markov}
\date{}

%%%%%%%%%%%%%%%%%%%%% COLORES %%%%%%%%%%%%%%%%%%%%%%%

\usepackage{color}
\definecolor{gray97}{gray}{.97}
\definecolor{gray75}{gray}{.75}
\definecolor{gray45}{gray}{.45}
\usepackage{mdframed}
\usepackage{subfig}
\usepackage{epsfig}
\usepackage{enumitem}
\usepackage{listings}
 


%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\begin{document}
\maketitle


\noindent \large{\textbf{Ejercicio 1.}}
\\
\begin{tikzpicture}[start chain = going right,
  -Triangle, every loop/.append style = {-Triangle}]
  \foreach \i in {0,...,4} 
    \node[state, on chain]  (\i) {\i};
  \foreach \i in {0,...,3} {
    \draw let \n1 = { int(\i+1) } in
      (\i)  edge[bend left] (\n1)
      (\n1) edge[bend left] (\i);
  }
  \foreach \i/\txt in {1/here,2/there,3/here too}
    \draw  (\i) edge[loop below, "\txt"] (\i);
  \draw    (0)  edge[loop left, "left"]   (0);
  \draw    (4)  edge[loop right, "right"]  (4);
\end{tikzpicture}



\end{document}

thanks

[Stefan Kottwitz]

It's caused by the shorthand " which is a spanish babel command. You could disable it by

Code: Select all

\shorthandoff{"}

Either globally in the preamble, if you don't use it, or locally in the TikZ picture, at the beginning.

Stefan

[Estabilo]

oh yes!! thanks Stefan !!!
Sorry but I need the last one thing, I don´t know to writte above translation.
I tried this but it does not run

Code: Select all

\draw (\i)  edge[bend left,"\txt"] (\n1)
\draw (0)  edge[bend left,"a"] (1)

but not compilation :S

I need this: (photo)



thanks