Hey I have to illustrated some networks using Tikz and the first one looks like this, in tikz:
\usetikzlibrary{arrows,automata}
\begin{tikzpicture}[->,>=stealth',shorten >=1pt,auto,node distance=2cm,
semithick]
%\tikzstyle{every state}=[fill=red,draw=none,text=white]
\node[state] (A) {$A$};
\node[state] (C) [below right of=A] {$C$};
\node[state] (B) [below left of=C] {$B$};
\node[state] (D) [right of=C] {$D$};
\node[state] (E) [above right of=D] {$E$};
\node[state] (F) [below right of=D] {$F$};
\path (A) edge node {a} (C)
edge node {a} (E)
(B) edge node {b} (C)
edge node {b} (F)
(C) edge node {a + b} (D)
(D) edge node {a + b} (E)
edge node {a + b} (F);
\end{tikzpicture}
%%% Local Variables:
%%% mode: latex
%%% TeX-master: t
%%% End:
A very simple butterfly network, and if I only compile with this Tikzpicture, there is no problem. However, if I add another Tizpicture, for instance a simple hub-by-hub network:
\begin{tikzpicture}[->,>=stealth',shorten >=1pt,auto,node distance=2cm,
semithick]
%\tikzstyle{every state}=[fill=red,draw=none,text=white]
\node[state] (A) {$E$};
\node[state] (B) [right of=A] {$X$};
\node[state] (C) [right of=B] {$X$};
\node[state] (D) [right of=C] {$D$};
\path (A) edge node {} (B)
(B) edge node {} (C)
(C) edge node {} (D);
\end{tikzpicture}
I start getting this error:
! Package pgfkeys Error: I do not know the key '/tikz/state' and I am going to
ignore it. Perhaps you misspelled it.
I simply cannot figure out what is wrong hope someone can help me
\usetikzlibrary{arrows,automata}
is probably loaded locally and the second one doesn't seeautomata