How to make a presentation with Latex - Introduction to Beamer

We shall see in this article how to make a presentation with LaTeX, using the powerful class Beamer. If you want to make an outstanding “stressfree” presentation and bring your ideas or your work under a whole new light, let’s get started.

Installing the Beamer class

You will first need to install the package Beamer. Under Debian or Ubuntu, you can type the following command:

apt-get install latex-beamer

Once the latex-class Beamer is installed, you are definitely ready to stat your first presentation.

Basic presentation with Beamer

\documentclassbeamer> \usepackage[latin1]inputenc> \usethemeWarsaw> \title[Make a LaTeX presentation using Beamer]Introduction to Beamer\\How to make a presentation with LaTeX?> \authorNadir Soualem -- Astozzia> \instituteMath-linux.com> \dateJule 13, 2007> \begin \begin \titlepage \end \begin Introduction> This is a short introduction to Beamer class. \end \end

A few explanations:

\documentclassbeamer>

means that our document is a Beamer presentation

\usepackage[latin1]inputenc>

this package enables us to use special letters (with accents, cedillas, etc). You can discard this command when the presentation is in English.

\usethemeWarsaw>

This is our outer theme (color and background). As you can imagine, there are tons of themes. You can refer to Beamer documentation for more details.

\title[Making a LaTeX presentation with Beamer]Introduction to Beamer\\How to make a LaTeX presentation?>

this defines the title of the presentation. As you can see, there are two titles:

\authorNadir Soualem -- Astozzia>

defines Nadir Soualem and Astozzia (us!) as the authors of the presentation.

\instituteMath-linux.com>

defines where the presentation was held. Finally, we use

\dateJuly 13, 2007>

To define the document, we use the markers

\begin . \end

To define a slide of the presentation, we use the markers

\begin . \end

To define a page title (frame), we mention it as follows

\begin Introduction>

Introduction will be the title of the page. To define the first page, which contains details such as the title, the author, the date, etc - we use a frame in which we include the \titlepage command

\begin \titlepage \end

To define a frame containing the layout of the presentation, we proceed as follows:

\AtBeginSubsection[]  \begin \frametitleLayout> \tableofcontents[currentsection,currentsubsection] \end >

The layout is therefore mentioned at every section and subsection. You should insert \section and \subsection throughout the presentation and out of the frames:

\sectionName_of_the_section> \begin . \end . \sectionName_of_the_section> \subsectionName_of_the_subsection> \begin . \end

Animations – Overlays

A good presentation is one that is dynamic and attracts the audience’s interest. Generally, we resort to a dynamic type of presentations. Alternatively stated, when we speak, we simultaneously show significant points of the talk, or hide others, or keep just the important ones. We shall see in this section how animations function in Beamer.

Item-by-item list view: the \pause command

In order to view several items of a list on the same slide, we type the following commands inside a frame:

\begin \pause \item Beamer is a wonderful class \pause \item One can make animations \pause \item One uses the\textbfpause> command, for example \pause \item in order to bring in important ideas \end

We will thus see the items of our list, one by one.

Item-by-item list view: the \item command

An alternative way to visualize the elements of a list item by item is to use the \item command, where n is a natural number referring to the slide, beginning from which the item appears.

\begin \item appears from slide 2 on \item appears from slide 3 on \item appears from slide 4 on \item appears from slide 5 on \end

List item interval and isolated items: the \item and \item

commands

An example is worth a long speech:

\begin \item appears from slide 2 on \item appears from slide 2 to slide 4 \item appears on slide 4 \item appears from slide 3 on \end

\item means that the list item will appear on slides numbered n to m, whereas \item means that the item will appear on slide p.

Item-by-item long list view: the [] command

Sometimes the lists you want to display are long and it is not practical to use the \item command. An alternative solution is the use of the [] command

\begin [] \item L \item A \item T \item E \item X \end

Up to now, we have dealt with lists. We shall now see how to use text and slides.

Displaying and hiding text in slides: the \uncover, \uncover and \uncover

commands

\uncover will display the text from slide n on; \uncover means the text element will appear from slide n to m. Finally, \uncover means that the text will appear on slide p. Here is a case in point of a frame containing the \uncover command.

\begin \uncover appear from slide 2 on\\> \uncover appears from 3 to slide 4\\> \uncoverappears on slide 4\\> \uncoverappears from slide 3 on\\> \end

Be careful not to forget the braces after the \uncover command. The syntax is as follows:

\uncover. > \uncover. > \uncover
. >

Displaying and hiding text in slides: the \only, \only and \only

commands

\only works like\uncover with the exception that the \only command is not as “cumbersome” on slides. Here is an example:

\begin \only appear from slide 2 on\\> \only appears from 3 to slide 4\> \onlyappear on slide 4\\> \onlyappear from slide 2 on\\> \end

Here is an other example to better grasp the difference between \only and \uncover

\begin \begin \item Language used by Beamer: L\uncoverA>TEX \item Language used by Beamer: L\onlyA>TEX \end \end

Hide text in slides: the \invisible commands

\invisible makes text invisible on slide n

\begin \invisibleThis text will be invisible on slide 2, but not on others slides>\\ This text is always visible\\ \uncoverBeamer> \uncoveris> \uncoversuper> \uncoverpowerful> \end

Another alternative: the \alt commands

As an alternative, one can use the \alt command on a slide. The first argument is the value on slide n. The second is for values other than n. Here is an example:

\altI am on slide 3\\>I am not on slide 3\\> \only appears from slide 2 on\\> \only appears from slide 3 to slide 4\\> \onlyappears on slide 4\\> \onlyappears from slide 3 on\\>

Highlighting text in red: the \alert command

To highlight text in red on slide n, we use the \alert command.

\alertThis text> \alertis> \alertred>

Successively highlighting list items in red: the <+-| alert@+>command

\begin \item <+-| alert@+>Robert De Niro \item <+-| alert@+>Brian De Palma \item <+-| alert@+>Gerard Depardieu \item <+-| alert@+>Tux \end

Using colors in a text on a slide: the \color, \color and\color

commands

The first argument is the red, green, yellow, blue, etc … The second is the text to be colored

Some colors . \\ \colorgreen>Green color\\> Great .

Creating links: the \hyperlink<\beamergotobutton> commands

To define internal links, we should add the following package in the preamble

\usepackagehyperref>

Then, we should define a label pointing on the frame:

\begin [label=MY_LABEL] The link will point to this frame \end

you define MY_LABEL as you please ! Finally, on the frame where the link is to be created, we proceed as follows:

\hyperlinkMY_LABEL>\beamergotobuttonRefer to this page>>

There we are! We can see a button Refer to this page pointing to the frame labeled MY_LABEL.

Thus, the first argument of \hyperlink<\beamergotobutton> is the name of the label to be pointed at and \beamergotobutton has the name of the button as an argument.

Defining blocks inside frames

For important stuff, we define blocks as follows:

\begin Block title> This is a block in blue \end \begin Alert-block title> This is a block in red \end \begin Example-block title> This is a block in green \end

As clear as onion soup .

Dynamic display of tables: the \pause and \onslide commands

First off, we should add the package colortbl to the preamble

\usepackagecolortbl>

To display rows dynamically, we shall use the \pause command as follows:

\begin lcccc> Class & A & B & C & D \\\hline X & 1 & 2 & 3 & 4 \pause\\ Y & 3 & 4 & 5 & 6 \pause\\ Z &5&6&7&8 \end

To display columns dynamically, we shall use the \onslide command as follows:

\begin lc\onslide>c\onslide>c\onslide>c\onslide>c> Class & A & B & C & D \\ X & 1 & 2 & 3 & 4 \\ Y & 3 & 4 & 5 & 6 \\ Z &5&6&7&8 \end

Writing on several columns: the \begin. \end commands

For two columns, we proceed as follows:

\begin \begin [l]5cm> First column \end \begin [r]5cm> Second column \end \end

l,r,c refers to the position: left, right, center. The syntax is as follows:

\begin \begin [position]column width> . \end \begin [position]column width> . \end \end

Inserting a figure in a Beamer presentation

To insert an image or a figure, we proceed as in LaTeX by using the \includegraphics command. Here is an example:

\begin \includegraphics[options]path_to_image> \end

In Beamer, we should distinguish between two types of figures:

  • PS type: .eps, .ps and pspicture type (LaTeX)
  • General type: .pdf, .png, .jpg, .jpeg You will need to compile a Beamer-class file.

Compiling a Beamer presentation

I assume that the your file is called file.tex.. There are ways to compile, depending on the type of figure you inserted. For PS-type figures, we shall use the following commands

latex fichier.tex latex fichier.tex dvips fichier.dvi ps2pdf fichier.ps

We shall obtain the file file.pdf.

For general-type figures, we shall use the command

latex2pdf fichier.tex latex2pdf fichier.tex

We shall also obtain the file file.pdf.

Conclusion

It goes without saying that explaining all the possibilities that Beamer offers is way too long. Have look to the official documentation, which is more exhaustive.

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