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up vote 1 down vote favorite

I have the following code:

\begin{tikzpicture}[grow=right, sloped]
\tikzstyle{level 1}=[level distance=1.3cm, sibling distance=1cm]
\tikzstyle{level 2}=[level distance=1.2cm, sibling distance=1cm]
\node[bag] {$S_i$}
    child[grow=left] {
        node[bag] {$S_{i+1}^{(1)}$}        
            child {
                node[end, label=left:
                    {$S$}] {}
                edge from parent[-latex]
                node[above] {$W$}
            }
            child {
                node[end, label=left:
                    {$S$}] {}
                edge from parent[-latex]
                node[above] {$B$}
            }
            child {
                node[end, label=left:
                    {$S$}] {}
                edge from parent[-latex]
                node[above] {$B$}
            }
            edge from parent[-latex]
            node[above] {$W$}
    }
    child[grow=right] {
        node[bag] {$A$}        
        child {
                node[bag] {$ \dots S_{i+1}^{(k_1)}$}
                edge from parent[-latex]
                node[above] {$w$}
        }
        child {
                node[bag] {$S_{i+1}^{(2)}$}
                child {
                     node[bag] {$S_{i+2}^{(2)(k_{\dots})}$}
                     edge from parent[-latex]
                     node[above] {u}
                }
                child {
                     node[bag] {$S_{i+2}^{(2)(2)}$}
                     edge from parent[-latex]
                     node[above] {u}
                }
                edge from parent[-latex]
                node[above] {$w$}
        }
        child {
                node[bag] {$S_{i+1}^{(1)}$}
                child {
                     node[bag] {$S_{i+2}^{(1)(k_{\dots})}$}
                     edge from parent[-latex]
                     node[above] {u}
                }
                child {
                     node[bag] {$S_{i+2}^{(1)(2)}$}
                     edge from parent[-latex]
                     node[above] {u}
                }
                child {
                     node[bag] {$S_{i+2}^{(1)(1)}$}
                     edge from parent[-latex]
                     node[above] {u}
                }
                edge from parent[-latex]
                node[above] {$w$}
        }
        edge from parent[-latex]    
            node[above] {$B$}
    };
\end{tikzpicture}

Having in preamble

\tikzstyle{bag} = [text width=1.5em, text centered]
\tikzstyle{end} = [circle, minimum width=3pt,fill, inner sep=0pt]

My problem is that the branch on the right generates collisions and the tree does not expand automatically.

Basically speaking nodes do overlap. How can i avoid this???

Thanks

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1  
Please complete your code to make it compilable; as it is now, no one knows how you defined the bag and end styles, for example. – Gonzalo Medina Apr 2 '12 at 3:10
Very sorry, forgot about it – Andry Apr 2 '12 at 3:58
@Andry This is still not compilable code: put everything into a \documentclass{article}\usepackage{tikz}...\begin{document}...\end{document} This way people can play with your code more easily. – Alan Munn Apr 2 '12 at 4:03

1 Answer

up vote 2 down vote accepted

You just have to give appropriate values to sibling distance for the appropriate levels; in your example, the problematic levels are the second and the third:

\documentclass{article}
\usepackage{tikz}

\begin{document}

\begin{tikzpicture}[grow=right, sloped,bag/.style={draw},end/.style={draw}]
\tikzstyle{level 2}=[level distance=1.3cm, sibling distance=4cm]
\tikzstyle{level 3}=[level distance=2.2cm, sibling distance=1.5cm]
\node[bag] {$S_i$}
    child[grow=left,level 2/.style={sibling distance=1.5cm}] {
        node[bag] {$S_{i+1}^{(1)}$}        
            child {
                node[end, label=left:
                    {$S$}] {}
                edge from parent[-latex]
                node[above] {$W$}
            }
            child {
                node[end, label=left:
                    {$S$}] {}
                edge from parent[-latex]
                node[above] {$B$}
            }
            child {
                node[end, label=left:
                    {$S$}] {}
                edge from parent[-latex]
                node[above] {$B$}
            }
            edge from parent[-latex]
            node[above] {$W$}
    }
    child[grow=right] {
        node[bag] {$A$}        
        child {
                node[bag] {$ \dots S_{i+1}^{(k_1)}$}
                edge from parent[-latex]
                node[above] {$w$}
        }
        child {
                node[bag] {$S_{i+1}^{(2)}$}
                child {
                     node[bag] {$S_{i+2}^{(2)(k_{\dots})}$}
                     edge from parent[-latex]
                     node[above] {u}
                }
                child {
                     node[bag] {$S_{i+2}^{(2)(2)}$}
                     edge from parent[-latex]
                     node[above] {u}
                }
                edge from parent[-latex]
                node[above] {$w$}
        }
        child {
                node[bag] {$S_{i+1}^{(1)}$}
                child {
                     node[bag] {$S_{i+2}^{(1)(k_{\dots})}$}
                     edge from parent[-latex]
                     node[above] {u}
                }
                child {
                     node[bag] {$S_{i+2}^{(1)(2)}$}
                     edge from parent[-latex]
                     node[above] {u}
                }
                child {
                     node[bag] {$S_{i+2}^{(1)(1)}$}
                     edge from parent[-latex]
                     node[above] {u}
                }
                edge from parent[-latex]
                node[above] {$w$}
        }
        edge from parent[-latex]    
            node[above] {$B$}
    };
\end{tikzpicture}

\end{document}

enter image description here

Perhaps you could also be interested in the edge from parent path option to control where the arrows will connect the nodes:

\documentclass{article}
\usepackage{tikz}

\begin{document}

\begin{tikzpicture}[grow=right, sloped,bag/.style={draw},end/.style={draw},
edge from parent path={(\tikzparentnode.east) -- (\tikzchildnode.west)}
]
\tikzstyle{level 2}=[level distance=2cm, sibling distance=4cm]
\tikzstyle{level 3}=[level distance=2.2cm, sibling distance=1.5cm]
\node[bag] {$S_i$}
    child[grow=left,level 2/.style={sibling distance=1.5cm},edge from parent path={(\tikzparentnode.west) -- (\tikzchildnode.east)}] {
        node[bag] {$S_{i+1}^{(1)}$}        
            child {
                node[end, label=left:
                    {$S$}] {}
                edge from parent[-latex]
                node[above] {$W$}
            }
            child {
                node[end, label=left:
                    {$S$}] {}
                edge from parent[-latex]
                node[above] {$B$}
            }
            child {
                node[end, label=left:
                    {$S$}] {}
                edge from parent[-latex]
                node[above] {$B$}
            }
            edge from parent[-latex]
            node[above] {$W$}
    }
    child[grow=right] {
        node[bag] {$A$}        
        child {
                node[bag] {$ \dots S_{i+1}^{(k_1)}$}
                edge from parent[-latex]
                node[above] {$w$}
        }
        child {
                node[bag] {$S_{i+1}^{(2)}$}
                child {
                     node[bag] {$S_{i+2}^{(2)(k_{\dots})}$}
                     edge from parent[-latex]
                     node[above] {u}
                }
                child {
                     node[bag] {$S_{i+2}^{(2)(2)}$}
                     edge from parent[-latex]
                     node[above] {u}
                }
                edge from parent[-latex]
                node[above] {$w$}
        }
        child {
                node[bag] {$S_{i+1}^{(1)}$}
                child {
                     node[bag] {$S_{i+2}^{(1)(k_{\dots})}$}
                     edge from parent[-latex]
                     node[above] {u}
                }
                child {
                     node[bag] {$S_{i+2}^{(1)(2)}$}
                     edge from parent[-latex]
                     node[above] {u}
                }
                child {
                     node[bag] {$S_{i+2}^{(1)(1)}$}
                     edge from parent[-latex]
                     node[above] {u}
                }
                edge from parent[-latex]
                node[above] {$w$}
        }
        edge from parent[-latex]    
            node[above] {$B$}
    };
\end{tikzpicture}

\end{document}

enter image description here

share|improve this answer
Thankyou Gonzalo :) – Andry Apr 2 '12 at 4:02

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