Problem with minipage + nodes + beamer

Hi all,

	I was not shure if my question is beamer or tikz related so excuse double  
posting.

	I want to place three tikzpictures on the same beamer slide. I also want  
to reference nodes inside pictures so I tried to use a tikzpicture which  
contains three nodes containing each one a minipage with the 'real'  
tikzpictures.

	One of my pictures shows a label over a path, the original pictures is  
correct, but when i include it inside a minipage inside a node, the label  
moves to the end of the path. Here you have a minimal example that shows  
this problem. I use beamer and pgf last week cvs versions.

\documentclass{beamer}
\usepackage{tikz}
\begin{document}
\begin{frame}{Test}

%% A node which contains a tikzpicture inside a minipage environment
\begin{tikzpicture}
\node (trellis) {
\bgroup % why should I use bgroup and egroup?
\begin{minipage}{5.5cm}
     \begin{tikzpicture}[node distance=1.25cm,font=\tiny]
     \tikzstyle{n}=[circle,fill,minimum size=4pt,inner sep=0pt,outer  
sep=0pt]
     \tikzstyle{etiqueta}=[circle,fill=white,inner sep=0pt,font=\tiny]
             \node [n, label=left:$S_0$] (N-0-0) at (0,0) {};

Re: Problem with minipage + nodes + beamer

>
> It's possible to resolve this problem with the use of midway
>
> \tikzstyle{etiqueta}=[circle,fill=white,inner sep=0pt,font=\tiny,midway]
>
>
> The rsult is the same with this code (below)
> %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
> \usepackage{tikz}
>
> \begin{document}
> \tikzstyle{n}=[circle,fill,minimum size=4pt,inner sep=0pt,outer sep=0pt]
> \tikzstyle{etiqueta}=[circle,fill=white,inner sep=0pt,font=\tiny]
> \begin{tikzpicture}
> \node (trellis)  {%
>    \begin{tikzpicture}[node distance=1.25cm,font=\tiny]
>        \node [n, label=left:$S_0$] (N00) at (0,0) {};
>        \node [n] (N01) at (1,0) {};
>        \draw (N00) -- node[etiqueta]{$00$} (N01);
> \end{tikzpicture}
> };
> \end{tikzpicture}
> %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
>

Alain,

thank you for your answer, but it doesn't solve all problems.

What I was complaining about was that the same tikz code produces  

Re: Problem with minipage + nodes + beamer

Le 2 oct. 07 à 11:38, Ignasi Furió a écrit :

> \begin{tikzpicture}
> \node[inner sep=0pt,above right] (arbre) {
> \bgroup
> \begin{minipage}{4cm}
> \begin{tikzpicture}[level distance=6mm,font=\tiny, draw, thick]
>

1) Why [inner sep=0pt,above right] ?

2) Why bgroup ?

3) why minipage ?

The problem for me is 1) [inner sep=0pt,above right]

try this code : I get exactly the same result

\documentclass{beamer}
\usepackage{tikz}
\usetikzlibrary{trees}
\begin{document}
\tikzstyle{every child node}=[fill=white,rectangle,inner sep=1pt]
\tikzstyle{level 1}=[sibling distance=40mm]
\tikzstyle{level 2}=[sibling distance=20mm]
\tikzstyle{level 3}=[sibling distance=10mm]

\begin{frame}

Re: Problem with minipage + nodes + beamer

I think that's the word in relation with your problem is "inherited",  
it's like CSS cascade Style
for me, tikz is "CST" :)

Perhaps I'm wrong and T.Tantau can give to you  a better  
explanation  ...

Below, it's a part of the documentation :

"Second, which pos is chosen for the node? The position is inherited  
from the surrounding scope. However,
this holds only for nodes speci ed in this implicit way. Thus, if you  
add the option [near end] to a scope,
this does not mean that all nodes given in this scope will be put on  
near the end of lines. Only the nodes
for which an implicit pos is added will be placed near the end.  
Typically, this is what you want."

Best Regards Alain

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Re: Problem with minipage + nodes + beamer

>
>> \begin{tikzpicture}
>> \node[inner sep=0pt,above right] (arbre) {
>> \bgroup
>> \begin{minipage}{4cm}
>> \begin{tikzpicture}[level distance=6mm,font=\tiny, draw, thick]
>>

> 1) Why [inner sep=0pt,above right] ?

Because is suggested at "PGF and TikZ examples gallery"
	http://www.fauskes.net/pgftikzexamples/connecting-text-and-graphics/
and I thought it was a good option.

------------------------
        \begin{tikzpicture}[show background grid]
             % Put the graphic inside a node. This makes it easy to place  
the
             % graphic and to draw on top of it.
             % The above right option is used to place the lower left corner
             % of the image at the (0,0) coordinate.
             \node [inner sep=0pt,above right]
                 {\includegraphics[width=4cm]{img/daniells-pile}};
------------------------

>
> 2) Why bgroup ?
>
> 3) why minipage ?
>

Re: Problem with minipage + nodes + beamer

The problems you are having, are indeed what Alain said, scoping
issues where options are inherited by subpictures.

On 10/2/07, Ignasi Furió <ignasi.furio <at> uib.es> wrote:
> >
> >> \begin{tikzpicture}
> >> \node[inner sep=0pt,above right] (arbre) {
> >> \bgroup
> >> \begin{minipage}{4cm}
> >> \begin{tikzpicture}[level distance=6mm,font=\tiny, draw, thick]
> >>
>
>
> > 1) Why [inner sep=0pt,above right] ?
>
> Because is suggested at "PGF and TikZ examples gallery"
>         http://www.fauskes.net/pgftikzexamples/connecting-text-and-graphics/
> and I thought it was a good option.
>

This example is slightly different because in the example an external
graphic is put inside a node. That's why it makes sense to set inner
sep=0pt and above right to get et lower left origin. When the contents
of the node is another tikzpicture the options are inherited and give
some odd results.

>
> >
> > 2) Why bgroup ?
> >

Re: Problem with minipage + nodes + beamer

Le 2 oct. 07 à 13:26, Kjell Magne Fauske a écrit :

> The problems you are having, are indeed what Alain said, scoping
> issues where options are inherited by subpictures.
>
>

kjell, I agree with all your answers.

Regards Alain

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Re: Error : Undefined Control Sequence.

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Re: Error : Undefined Control Sequence.

Le 4 oct. 07 à 09:14, Sakya Tripathy a écrit :

> I am trying to get the tikz package to load up
>
>
> tex file:
> --------------------------
> \documentclass{beamer}
>
>
> \mode<presentation>
> {
> \setbeamertemplate{background canvas}[vertical
> shading][bottom=red!10,top=blue!10]

here why not :

[verticalshading,bottom=red!10,top=blue!10]

>
> \usetheme{frankfurt}
> \usefonttheme{default}
> \setbeamercovered{dynamic}
> }
> \usepackage[english]{babel}
> \usepackage{tikz}

\usetikzlibrary{plotmarks}

Alain 
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Re: Error : Undefined Control Sequence.

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