Mrthfx

I'm trying to set a number of hierarchy trees directly in LaTeX and found tikz-qtree quite helpful for this task.

Since the descriptions for the nodes and children are rather long words, the layout doesn't seem optimal in a vertical tree.

Additionally, I'll merge those trees in a bigger tree and then things start getting crowded.

So, I thought of a horizontal tree. They're nice, too. But I just cannot get them to work properly.

The tikz-qtree-manual is pretty short and the containing example-nodes consist of a small number of letters only.

What I'm trying to achieve is something like the first tree, but "rotated" by 90°. The titles of nodes and children will be long (sometimes several words) and it will be a total of three levels in the end.

Simply growing the first tree to the right does not suffice. :)
Where can I find documentation about the properties of the "edge from parent path"-parameter? I didn't find them in the tikz-manual either.

I looked into the regular tikz-package, too, but ran into similar issues there. tikz-qtree has a prettier syntax, so I stuck with it.. Maybe something like dirtree would be suited better?

Anyway, here's a minimal working example:

documentclass{article}



usepackage{tikz}

usepackage{tikz-qtree}



begin{document}



Nice vertical tree. Bad for lots of subcategories.

begin{figure}[h!]

centering

begin{tikzpicture}

tikzset{edge from parent/.style= 

            {thick, draw,

                edge from parent path={(tikzparentnode.south)

                                        -- +(0,-8pt)

                                        -| (tikzchildnode)}}}

Tree 

    [. parent 

        [. {nice child0} ]

        [. child1 ] 

        [. child2 ]

        [. child3 ]

    ]

end{tikzpicture}

end{figure}



Vertical tree with different growth direction. Doesn't look quite right. o_O

begin{figure}[h!]

centering

begin{tikzpicture}

tikzset{grow'=right, edge from parent/.style= 

            {thick, draw,

                edge from parent path={(tikzparentnode.east)

                                        -- +(0,-8pt)

                                        -| (tikzchildnode)}}}

tikzset{every tree node/.style={anchor=base west}} 

Tree 

    [. parent 

        [. {nice child0} ]

        [. child1 ] 

        [. child2 ]

        [. child3 ]

    ]

end{tikzpicture}

end{figure}



Nice horizontal tree. Good for lots of subcategories, but `wrong' edges.

begin{figure}[h!]

centering

begin{tikzpicture}

tikzset{grow'=right,level distance=32pt} 

tikzset{execute at begin node=strut} 

tikzset{every tree node/.style={anchor=base west}} 

Tree   

    [.p

        [.c0 ]

        [.c1 ]

        [.c2 ]

        [.c3 ]

    ]

end{tikzpicture} 

end{figure}



Almost identical horizontal tree as above, but messed up layout for longer node-names. 

begin{figure}[h!]

centering

begin{tikzpicture}

tikzset{grow'=right,level distance=32pt} 

tikzset{execute at begin node=strut} 

tikzset{every tree node/.style={anchor=base west}} 

Tree   

    [.parent

        [.c1 ]

        [.c2 ]

    ]

end{tikzpicture} 

end{figure}



end{document}

Thank you guys for any pointers and your help!

Here's a solution using tikz-qtree plus the TikZ trees library, which offers a pre-made edge from parent fork right path for such trees.

documentclass{article}



usepackage{tikz}

usepackage{tikz-qtree}

usetikzlibrary{trees} % this is to allow the fork right path



begin{document}



begin{tikzpicture}[grow'=right,level distance=1.25in,sibling distance=.25in]

tikzset{edge from parent/.style= 

            {thick, draw, edge from parent fork right},

         every tree node/.style=

            {draw,minimum width=1in,text width=1in,align=center}}

Tree 

    [. parent 

        [.{nice child0}

                [.{grandchild0-0 } ]

            [.{grandchild0-1 } ]

            [.{grandchild0-2 } ]

            [.{grandchild0-3 } ]

        ]

        [.child1

                [.{grandchild1-0 } ]

            [.{grandchild1-1 } ]

            [.{grandchild1-2 } ]

        ] 

        [.child2 ]

        [.child3 ]

    ]

end{tikzpicture}

end{document}

how do you expand the grandchild boxes so they fit text? Thank you.