Latex Tutorial: How to Create Images, Diagrams, and Flow Charts Using Latex

This tutorial is an extension of previous video tutorial on how to use tikz for image creation in Latex. In this video I explain how to set up your document for flow chat design. This equally applies to any other image that uses similar structure.

Specifically, in this video I talk about following things:

1. How to create a flow chart
2. How to setup styles for reusable components of an image
3. How to draw arrows from one component to other
4. How to change the styles of components
5. How to change the arrowhead for Latex arrows
6. How to align components left, right, top, and below of each other

The code use:d in the video is here:

\documentclass{article}
\usepackage{tikz}
\usetikzlibrary{shapes,shadows,arrows}
\begin{document}
\tikzstyle{decision} = [diamond, draw, fill=blue!50]
\tikzstyle{line} = [draw, -stealth, thick]
\tikzstyle{elli}=[draw, ellipse, fill=red!50,minimum height=8mm, text width=5em, text centered]
\tikzstyle{block} = [draw, rectangle, fill=blue!50, text width=8em, text centered, minimum height=15mm, node distance=10em]
\begin{tikzpicture}
\node [block] (start) {Start};
\node [block, left of=start, xshift=-5em] (process1) {Process 1};
\node [elli, above of=start, yshift=5em] (user) {user};
\node [block, right of=start, xshift=5em] (process2) {Process 2};
\node[decision, below of=start, yshift=-5em](decision1){Process 1?};
%arrows
\path [line] (user) -- (start);
\path [line] (start) -- (decision1);
\path [line] (decision1) -| node[yshift=0.5em, xshift=10em] {yes} (process1);
\path [line] (decision1) -| node[yshift=0.5em, xshift=-10em] {no} (process2);
\end{tikzpicture}
\end{document}

The image produced by this code is :

The explanation of this code is given in the tutorial as we develop this code: