tikz-pgf
I have a lot of nodes placed with tikz. Now I need to draw an rectangle around all these nodes.
I can draw the rectangle manually with
\draw [fill=gray!5] (2, -6) rectangle (18, 6.5)
(2, 6.5) node[below right,fill,draw] {Rectangle Title};
All my nodes are named and placed relatively:
...
\node [below=5cm of nodeA] (nodeB) {Node B text};
...
Problems 1) and 3): you can control the alignment using the mid anchor of nodes. Problem 2): you can use the optional argument of the line changing command \\; here's a modified version of your code, feel free to change the lengths according to your needs:
\documentclass{article}
\usepackage{tikz}
\usetikzlibrary{shapes.multipart,positioning,fit}
\begin{document}
\begin{tikzpicture}[
drs/.style={draw, rectangle split, rectangle split parts=2}
]
\node[drs,align=left]
{ foo
\nodepart{two}
foobar \\[.5em]
\tikz{
\node (operator) {$\exists$};
\node[drs,right=2mm of operator.mid]{
a%
\nodepart{two}{
b%
}
};
} \\[.5em]
\tikz{
\node (operator) {$\rightarrow$};
\node[drs,left=4mm of operator.mid] (left side)
{ 1%
\nodepart{two}
2%
};
\node[drs,right=4mm of operator.mid] (right side)
{ 3%
\nodepart{two}
4 \\
5 \\
6%
};
}
};
\end{tikzpicture}
\end{document}
The idea (as Peter Grill suggested in a comment) is to name the necessary nodes and to use the fit library; auxiliary nodes were used; a simple loop draws the three frames and places the labels; also I changed from the obsolete \tikzstyle to \tikzset:
\documentclass{book}
\usepackage{tikz}
\usetikzlibrary{trees,positioning,fit}
\begin{document}
% Set the overall layout of the tree
\tikzset{
level 1/.style={level distance=4.5cm, sibling distance=6.5cm},
level 2/.style={level distance=4cm, sibling distance=2.5cm}
}
% Define styles for bags and leafs
\tikzset{
bag/.style = {text width=8em, text centered},
end/.style = {circle, minimum width=3pt,fill, inner sep=0pt},
atom/.style = {draw=black,thick}
}
% The sloped option gives rotated edge labels. Personally
% I find sloped labels a bit difficult to read. Remove the sloped options
% to get horizontal labels.
\begin{tikzpicture}[grow=right, sloped]
\node[bag] {$S_0 = 1$}
child {
node[bag] {$S_1 = 0.90$}
child {
node[end, label=right:
{$S_2 = 0.810$}] (b3) {}
edge from parent
node[above] {$Y_2 = y_3$}
}
child {
node[end, label=right:
{$S_2 = 0.900$}] {}
edge from parent
node[above] {$Y_2 = y_2$}
}
child {
node[end, label=right:
{$S_2 = 0.918$}] (t3) {}
edge from parent
node[above] {$Y_2 = y_1$}
}
edge from parent
node[above] {$Y_1 = y_3$}
}
child {
node[bag] {$S_1 = 1.00$}
child {
node[end, label=right:
{$S_2 = 0.900$}] (b2) {}
edge from parent
node[above] {$Y_2 = y_3$}
}
child {
node[end, label=right:
{$S_2 = 1.000$}] {}
edge from parent
node[above] {$Y_2 = y_2$}
}
child {
node[end, label=right:
{$S_2 = 1.020$}] (t2) {}
edge from parent
node[above] {$Y_2 = y_1$}
}
edge from parent
node[above] {$Y_1 = y_2$}
}
child {
node[bag] {$S_1 = 1.02$}
child {
node[end, label=right:
{$S_2 = 0.918$}] (b1) {}
edge from parent
node[above] {$Y_2 = y_3$}
}
child {
node[end, label=right:
{$S_2 = 1.020$}] {}
edge from parent
node[above] {$Y_2 = y_2$}
}
child {
node[end, label=right:
{$S_2 = 1.0404$}] (t1) {}
edge from parent
node[above] {$Y_2 = y_1$}
}
edge from parent
node[above] {$Y_1 = y_1$}
};
\begin{scope}[label distance=6mm,]
\foreach \i/\label in {1/Label 1,2/Label 2,3/Label 3}
{
\coordinate (aux\i) at ([xshift=2cm]t\i);
\node[inner sep=6pt,rounded corners=6pt,draw,red,fit={(t\i) (b\i) (aux\i)},label=right:{\color{red}\label}] {};
}
\end{scope}
\end{tikzpicture}
\end{document}
Best Answer
Let suppose, that your nodes have names. Among them are most outside
northernmost,southernmost,easternmostandwesternmost. In this case, as above comments say, the simple solution is:fit\node[draw,inner sep=2mm,label=below:Rectangle Title,fit=(northernmost) (southernmost) (easternmost) (westernmost)] {};