Draw arrow in a mind map

Question

I used the PGF manual to help me draw a figure like the image below. Mind map drawn with PGF

But I'd like to add some arrows to indicate the flow of the events, like this image (I made it with Paint)

Mind map drawn with Paint

I don't know how to that, because it's not a simple arrow. Here is my code:

\documentclass[11pt]{article}
\usepackage[brazil]{babel}     
\usepackage[latin1]{inputenc}   
\usepackage{graphics}
\usepackage{subfigure}
\usepackage{graphicx}
\usepackage{epsfig}
\usepackage[centertags]{amsmath}
\usepackage{graphicx,indentfirst,amsmath,amsfonts,amssymb,amsthm,newlfont}
\usepackage{longtable}
\usepackage{cite}
\usepackage[usenames,dvipsnames]{color}
\usepackage[algosection,algoruled,linesnumbered]{algorithm2e}
\usepackage{multirow}
\usepackage{pdflscape}
\usepackage{longtable}
\usepackage{tikz}
\usetikzlibrary{mindmap}
\usepackage[pdftex]{hyperref}


\newtheorem{theorem}{Theorem}[section]
\newtheorem{lemma}[theorem]{Lemma}
\newtheorem{proposition}[theorem]{Proposition}
\newtheorem{corollary}[theorem]{Corollary}


\SetKwInOut{Input}{input}
\SetKwInOut{Output}{output}

\DeclareMathOperator*{\argmin}{argmin}
\DeclareMathOperator*{\argmax}{argmax}



\begin{document}


\begin{figure}
    \centering
\resizebox{\columnwidth}{!}{    
    \begin{tikzpicture}[outer sep=0pt, scale=1.1]
        \node (n1) at (3,0) [circle,minimum size=1cm,fill,draw,thick,blue!65,text=white] {$\stackrel{4.}{\stackrel{Dual}{\textrm{\scriptsize \em Adjustment}}}$};
        \node (n2) at (0,2.5) [circle,minimum size=1cm,fill,draw,thick,blue,text=white] {$\stackrel{1.}{\stackrel{Dual\ Ascent\ 1}{\textrm{\scriptsize times = 1}}}$};
        \node (n3) at (0,0) [circle,minimum size=1cm,fill,draw,thick,blue,text=white] {$\stackrel{2.}{\stackrel{Dual\ Ascent\ 1}{\textrm{\scriptsize times = 2}}}$};
        \node (n4) at (0,-2.5) [circle,minimum size=1cm,fill,draw,thick,blue,text=white] {$\stackrel{3.}{\stackrel{Dual\ Ascent\ 2}{}}$};
        \node (n5) at (3,-2.5) [circle,minimum size=1cm,fill,draw,thick,red,text=white] {$\stackrel{5.}{LB}$};
        \node (n6) at (5,-2.5) [circle,minimum size=1cm,fill,draw,thick,gray!70!green,text=white] {$\stackrel{6.}{\textrm{\scriptsize Feasibility}}$};
        \node (n7) at (7,0) [circle,minimum size=1cm,fill,draw,thick,gray!80!green,text=white] {$\stackrel{7.}{\stackrel{Primal}{\textrm{\scriptsize Adjustment\ 1}}}$};
        \node (n8) at (10,0) [circle,minimum size=1cm,fill,draw,thick,gray!80!green,text=white] {$\stackrel{8.}{\stackrel{Primal}{\textrm{\scriptsize Adjustment\ 2}}}$};
        \node (n9) at (11.5,2.5) [circle,minimum size=1cm,fill,draw,thick,red,text=white] {$\stackrel{11.}{UB}$};
        \node (n10) at (5.5,2.5) [circle,minimum size=2.3cm,fill,draw,thick,orange!60!gray,text=white] {$\stackrel{9.}{\stackrel{Primal}{\textrm{\scriptsize Ascent}}}$};
        \node (n11) at (8.5,2.5) [circle,minimum size=1cm,fill,draw,thick,orange!60!gray,text=white] {$\stackrel{10.}{\stackrel{Primal}{\textrm{\scriptsize Adjustment\ 2}}}$};

        \path (n1) to[circle connection bar switch color=from (blue!65) to (blue)] (n2);
        \path (n1) to[circle connection bar switch color=from (blue!65) to (blue)] (n3);
        \path (n1) to[circle connection bar switch color=from (blue!65) to (blue)] (n4);
        \path (n1) to[circle connection bar switch color=from (blue!65) to (red)] (n5);
        \path (n1) to[circle connection bar switch color=from (blue!65) to (gray!70!green)] (n6);
        \path (n1) to[circle connection bar switch color=from (blue!65) to (gray!80!green)] (n7);
        \path (n6) to[circle connection bar switch color=from (gray!70!green) to (gray!80!green)] (n7);
        \path (n7) to[circle connection bar switch color=from (gray!80!green) to (gray!80!green)] (n8);
        \path (n8) to[circle connection bar switch color=from (gray!80!green) to (red)] (n9);
        \path (n11) to[circle connection bar switch color=from (orange!60!gray) to (orange!60!gray)] (n10);
        \path (n11) to[circle connection bar switch color=from (orange!60!gray) to (red)] (n9);
    \end{tikzpicture}
}

\end{figure}




\end{document}

That's pretty difficult to pull off. You might add it manually just like you did it in paint. — percusse, Jul 10 '15 at 16:30
@GonzaloMedina I meant what you wrote placing manually :) But the colors would start getting funky if you want to change the size of the arrow etc. ;) — percusse, Jul 10 '15 at 16:45
@percusse I know, I was just kidding :-). I will delete my previous comment and this one shortly. — Gonzalo Medina, Jul 10 '15 at 16:49

Gonzalo Medina · Accepted Answer · 2015-07-11T01:05:30.590

One idea: since changing individual connection bars is not easy, you can draw the arrow in the background (I used the backgrounds library and a customized Stealth arrow tip from the arrows.meta library):

enter image description here

The code:

\documentclass[11pt]{article}
\usepackage[brazil]{babel}     
\usepackage[latin1]{inputenc}   
\usepackage{graphics}
\usepackage{subfigure}
\usepackage{graphicx}
\usepackage{epsfig}
\usepackage[centertags]{amsmath}
\usepackage{graphicx,indentfirst,amsmath,amsfonts,amssymb,amsthm,newlfont}
\usepackage{longtable}
\usepackage{cite}
\usepackage[usenames,dvipsnames]{color}
\usepackage[algosection,algoruled,linesnumbered]{algorithm2e}
\usepackage{multirow}
\usepackage{pdflscape}
\usepackage{longtable}
\usepackage{tikz}
\usetikzlibrary{mindmap,backgrounds,arrows.meta}
\usepackage[pdftex]{hyperref}


\newtheorem{theorem}{Theorem}[section]
\newtheorem{lemma}[theorem]{Lemma}
\newtheorem{proposition}[theorem]{Proposition}
\newtheorem{corollary}[theorem]{Corollary}


\SetKwInOut{Input}{input}
\SetKwInOut{Output}{output}

\DeclareMathOperator*{\argmin}{argmin}
\DeclareMathOperator*{\argmax}{argmax}



\begin{document}


\begin{figure}
    \centering
\resizebox{\columnwidth}{!}{    
    \begin{tikzpicture}[outer sep=0pt, scale=1.1]
        \node (n1) at (3,0) [circle,minimum size=1cm,fill,draw,thick,blue!65,text=white] {$\stackrel{4.}{\stackrel{Dual}{\textrm{\scriptsize \em Adjustment}}}$};
        \node (n2) at (0,2.5) [circle,minimum size=1cm,fill,draw,thick,blue,text=white] {$\stackrel{1.}{\stackrel{Dual\ Ascent\ 1}{\textrm{\scriptsize times = 1}}}$};
        \node (n3) at (0,0) [circle,minimum size=1cm,fill,draw,thick,blue,text=white] {$\stackrel{2.}{\stackrel{Dual\ Ascent\ 1}{\textrm{\scriptsize times = 2}}}$};
        \node (n4) at (0,-2.5) [circle,minimum size=1cm,fill,draw,thick,blue,text=white] {$\stackrel{3.}{\stackrel{Dual\ Ascent\ 2}{}}$};
        \node (n5) at (3,-2.5) [circle,minimum size=1cm,fill,draw,thick,red,text=white] {$\stackrel{5.}{LB}$};
        \node (n6) at (5,-2.5) [circle,minimum size=1cm,fill,draw,thick,gray!70!green,text=white] {$\stackrel{6.}{\textrm{\scriptsize Feasibility}}$};
        \node (n7) at (7,0) [circle,minimum size=1cm,fill,draw,thick,gray!80!green,text=white] {$\stackrel{7.}{\stackrel{Primal}{\textrm{\scriptsize Adjustment\ 1}}}$};
        \node (n8) at (10,0) [circle,minimum size=1cm,fill,draw,thick,gray!80!green,text=white] {$\stackrel{8.}{\stackrel{Primal}{\textrm{\scriptsize Adjustment\ 2}}}$};
        \node (n9) at (11.5,2.5) [circle,minimum size=1cm,fill,draw,thick,red,text=white] {$\stackrel{11.}{UB}$};
        \node (n10) at (5.5,2.5) [circle,minimum size=2.3cm,fill,draw,thick,orange!60!gray,text=white] {$\stackrel{9.}{\stackrel{Primal}{\textrm{\scriptsize Ascent}}}$};
        \node (n11) at (8.5,2.5) [circle,minimum size=1cm,fill,draw,thick,orange!60!gray,text=white] {$\stackrel{10.}{\stackrel{Primal}{\textrm{\scriptsize Adjustment\ 2}}}$};

        \path (n1) to[circle connection bar switch color=from (blue!65) to (blue)] (n2);
        \path (n1) to[circle connection bar switch color=from (blue!65) to (blue)] (n3);
        \path (n1) to[circle connection bar switch color=from (blue!65) to (blue)] (n4);
        \path (n1) to[circle connection bar switch color=from (blue!65) to (red)] (n5);
        \path (n1) to[circle connection bar switch color=from (blue!65) to (gray!70!green)] (n6);
        \path (n1) to[circle connection bar switch color=from (blue!65) to (gray!80!green)] (n7);
        \path (n6) to[circle connection bar switch color=from (gray!70!green) to (gray!80!green)] (n7);
        \path (n7) to[circle connection bar switch color=from (gray!80!green) to (gray!80!green)] (n8);
        \path (n8) to[circle connection bar switch color=from (gray!80!green) to (red)] (n9);
        \path (n11) to[circle connection bar switch color=from (orange!60!gray) to (orange!60!gray)] (n10);
        \path (n11) to[circle connection bar switch color=from (orange!60!gray) to (red)] (n9);
    \begin{pgfonlayer}{background}    
    \draw 
      [concept connection,->,blue!70,shorten >= -0.15pt,-{Stealth[angle=70:1pt 6]}] 
      (n2) to (n1);
    \draw 
      [concept connection,->,orange!60!gray!90!red,shorten >= -0.15pt,-{Stealth[angle=70:1pt 6]}] 
      (n9) to (n11);
    \end{pgfonlayer}
    \end{tikzpicture}
}

\end{figure}

\end{document}

On a side note, be careful with some of the packages loaded: subfigure and epsfig are obsolote and shouldn't be used anymore; they've been superseeded by subfig or subcaption, the former, and by graphicx, the latter. Also, you are loading graphicx twice and graphics; it's enough to load graphicx (once). More dangerous: you are loading amsmath twice: once with centertags options and then with no options; this can produce clashes. On modern systems, there's no need to explicitly specify the driver for hyperref, so instead of

\usepackage[pdftex]{hyperref}

use

\usepackage{hyperref}

Perfect @Gonzalo Medina !!! that was a great idea. Thank you very much — Charles Henrique Porto Ferreir, Jul 10 '15 at 16:46
That looks good. It wouldn't be bad as a new feature to be honest. — Alenanno, Jul 10 '15 at 17:55
Perhaps it would be good to point out that loading some of those packages is Bad? — cfr, Jul 10 '15 at 20:31
@cfr True. I've added a remark about some of the packages. I am not sure about newlfont. Do you have any suggestions about this package? Thanks. — Gonzalo Medina, Jul 11 '15 at 00:38
(+1) I don't know about newlfont. Is it just obsolete? It seems to exist to support deprecated syntax. So I'd use it only if I couldn't easily update a document's syntax, I think, or if I really had to use a package which depended on stuff like \newmathalphabet. (I've never seen this command before - I guess it is 2.09?) amsmath is also loaded with different options, by the way. — cfr, Jul 11 '15 at 00:52
@cfr Yes, I saw that it's from Frank and it seems to offer support for old syntax. No idea, however, what to suggest to the OP. Thanks for the heads up about amsmath :-) — Gonzalo Medina, Jul 11 '15 at 01:03

Draw arrow in a mind map

1 Answers1