latex flow diagrams
documentclass{article} usepackage[latin1]{inputenc} usepackage{tikz} usetikzlibrary{shapes,arrows} begin{document} pagestyle{empty} % Define block styles tikzstyle{decision} = [diamond, draw, fill=blue!20, text width=4.5em, text badly centered, node distance=3cm, inner sep=0pt] tikzstyle{block} = [rectangle, draw, fill=blue!20, text width=5em, text centered, rounded corners, minimum height=4em] tikzstyle{line} = [draw, -latex'] tikzstyle{cloud} = [draw, ellipse,fill=red!20, node distance=3cm, minimum height=2em] begin{tikzpicture}[node distance = 2cm, auto] % Place nodes node [block] (init) {initialize model}; node [cloud, left of=init] (expert) {expert}; node [cloud, right of=init] (system) {system}; node [block, below of=init] (identify) {identify candidate models}; node [block, below of=identify] (evaluate) {evaluate candidate models}; node [block, left of=evaluate, node distance=3cm] (update) {update model}; node [decision, below of=evaluate] (decide) {is best candidate better?}; node [block, below of=decide, node distance=3cm] (stop) {stop}; % Draw edges path [line] (init) -- (identify); path [line] (identify) -- (evaluate); path [line] (evaluate) -- (decide); path [line] (decide) -| node [near start] {yes} (update); path [line] (update) |- (identify); path [line] (decide) -- node {no}(stop); path [line,dashed] (expert) -- (init); path [line,dashed] (system) -- (init); path [line,dashed] (system) |- (evaluate); end{tikzpicture} end{document}
