LaTeX notes

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latex-logo.png

Examples

Standalone equation

\documentclass[preview,varwidth=true]{standalone}

\usepackage{amsmath}
\usepackage{amssymb}

\begin{document}

\begin{equation}
  h^2 = a^2 + b^2
\end{equation}

\end{document}

Standalone equation (again)

Here is a more involved example. This might be useful to include as an image in some slides. 

\documentclass[preview,border=0.7cm,varwidth=11.8cm,convert={density=300,size=1080x800,outext=.png}]{standalone}

%% r0-in-words.tex
%% ===============
%%
%% This produces a simple image spelling out the effective
%% reproduction number of a birth-death-sampling model.
%%
%% Usage
%% -----
%%
%% pdflatex -shell-escape r0-in-words
%%

\usepackage{amsmath}
\usepackage{amssymb}
\usepackage{xcolor}

\begin{document}

{\fontfamily{phv}\fontsize{12}{10}\selectfont
  The \emph{effective reproduction number}, \(R\), is the expected number
  of secondary cases per infectious individual.

  \vspace{0.7cm}
  \noindent
  For the birth-death-sampling model
\begin{align*}
  R \quad=&\quad  \frac{\text{birth rate}}{\text{net removal rate}} \hspace{3.0cm} \\
  =& \quad\frac{\lambda}{\mu + \psi + \omega}
\end{align*}
}

\end{document}

To compile it, you need to allow -shell-escape to get PNG output. 

pdflatex -shell-escape r0-in-words

Standalone references

bibliographic-slide.png 

\documentclass[
  preview,border=0.7cm,varwidth=12.8cm,
  convert={density=300,size=1080x800,outext=.png}]{standalone}

%% bibliography-slide.tex
%% ======================
%%
%% Usage
%% -----
%%
%% To create a slide with the bibliography, run the following command:
%%
%% pdflatex bibliography-slide
%% pdflatex bibliography-slide
%% biber bibliography-slide
%% pdflatex -shell-escape bibliography-slide
%%
%% This will create a file called `bibliography-slide.png` which can
%% be included in a presentation. It reads the references from
%% references.bib

\usepackage{amsmath}
\usepackage{amssymb}
\usepackage{xcolor}

%% Since slides often use helvetica, these lines ensure the references
%% are printed in helvetica.
\usepackage[scaled]{helvet}
\renewcommand{\sfdefault}{phv}
\renewcommand{\familydefault}{\sfdefault}

\usepackage[
  backend=biber,
  style=authoryear,
  dashed=false,
  maxcitenames=2,
  maxbibnames=2]{biblatex}
\addbibresource{references.bib}

\begin{document}

\printbibliography[heading=none]
\nocite{*}

\end{document}

The following should be saved into references.bib 

@article{stadler2009incomplete,
  title =        {{O}n incomplete sampling under birth-death models and
                  connections to the sampling-based coalescent},
  journal =      "Journal of Theoretical Biology",
  volume =       261,
  number =       1,
  pages =        "58--66",
  year =         2009,
  doi =          "10.1016/j.jtbi.2009.07.018",
  author =       "Tanja Stadler"
}

@article{stadler2010sampling,
  title =        {{S}ampling-through-time in birth-death trees},
  author =       "Tanja Stadler",
  journal =      "Journal of Theoretical Biology",
  volume =       267,
  number =       3,
  pages =        "396--404",
  year =         2010,
  doi =          "10.1016/j.jtbi.2010.09.010"
}

@article{stadler2011estimating,
  author =       {Stadler, Tanja and Kouyos, Roger and Bonhoeffer, Sebastian and
                  Joos, Beda and G\"{u}nthard, Huldrych F. and Rieder, Philip and
                  von Wyl, Viktor and Yerly, Sabine and B\"{o}ni, J\"{u}rg and
                  B\"{u}rgisser, Philippe and Klimkait, Thomas and Drummond, Alexei
                  J. and Xie, Dong and the Swiss HIV Cohort Study},
  title =        {{Estimating the Basic Reproductive Number from Viral Sequence
                  Data}},
  journal =      {Molecular Biology and Evolution},
  volume =       29,
  number =       1,
  pages =        {347-357},
  year =         2011,
  month =        09,
  issn =         {0737-4038},
  doi =          {10.1093/molbev/msr217}
}

Then to compile this use the following: 

pdflatex bibliography-slide
pdflatex bibliography-slide
biber bibliography-slide
pdflatex -shell-escape bibliography-slide

Basic document I

See this example to extend this with a bibliography. 

\documentclass[9pt,twocolumn]{scrartcl}
% \documentclass{article}

% ------------------------------------------------------------
% Packages
\usepackage{amsmath}
\usepackage{amssymb}
\usepackage[a4paper]{geometry}
\geometry{margin=0.75in}
\usepackage{hyperref}
% ------------------------------------------------------------

% ------------------------------------------------------------
% Macros
\newcommand{\name}[0]{}
% ------------------------------------------------------------

% ------------------------------------------------------------
% Title information
\title{Fleeb}
\date{}
\author{Squanchy}
% ------------------------------------------------------------

\begin{document}

\maketitle

Here is some text

\end{document}

You can use the article class for a more standard look, but I think the two column scrartcl set up is very nice. I have also included some sections here for stuff that is pretty standard and is useful to have as a reference. It won't be terrible if you leave it in but do not need it.

The use of the geometry package means that you can use \geometry{margin=0.75in} to utilise more of the page. I use this for two columns so you may need to adjust it if you are using a single column.

Basic document II

latex-basic-document-ii.png

LaTeX

Here is a basic LaTeX document that makes use of both images and references. Note that it assumes the image is available in a directory called images. 

\documentclass[fontsize=12pt,parskip=yes,onecolumn]{scrartcl}

% ------------------------------------------------------------
% Packages
\usepackage{amsmath}
\usepackage{amssymb}
\usepackage[a4paper]{geometry}
\geometry{margin=1.00cm}
\interfootnotelinepenalty=10000 % prevents footnote spreading across
                                % pages.

\usepackage{hyperref}
\usepackage[utf8]{inputenc}
\usepackage[english]{babel}
\usepackage{graphicx}

\usepackage[
natbib=true,
backend=bibtex,
maxcitenames=1,
minbibnames=3,
maxbibnames=40,
style=authoryear
]{biblatex}

\usepackage[
figurename=Figure,
font={sf,normalsize},
format=plain,
labelfont=bf,
]{caption}

\addbibresource{references.bib}
% ------------------------------------------------------------

% ------------------------------------------------------------
% Title information
\title{An example document}
\date{}
\author{Alexander E. Zarebski}
% ------------------------------------------------------------

\begin{document}

\maketitle

Here is an example of a document with citations and a figure.
Figure~\ref{fig:timtam} shows the logo of the TimTam package
\citep{zarebski2022computationally}. Doesn't it look nice?!

\begin{figure}[ht]
  \centering
  \includegraphics[width=0.5\linewidth]{images/timtam-beast2.png}
  \caption{\label{fig:timtam} Here is a caption.}
\end{figure}

\printbibliography{}

\end{document}

Compilation

This can be compiled with the following script which also generates a date stamped PDF of the compiled document 

#!/usr/bin/env bash
# -*- mode:sh; -*-

function compileAndClean {
    base_filename=$1
    # Compile LaTeX document
    pdflatex $base_filename
    bibtex $base_filename
    pdflatex $base_filename
    pdflatex $base_filename

    # List of extensions of temporary files to remove
    aux_extensions=(aux log out bbl blg run.xml)

    # Remove temporary files
    for ext in "aux_extensions[@]"; do
        tmp_file="$base_filename.$ext"
        if [ -f "$tmp_file" ]; then
            rm $tmp_file
        fi
    done

    # Make a backup copy of the pdf with today's date
    cp "$base_filename.pdf" "$base_filename-$(date '+%Y-%m-%d').pdf"
}

compileAndClean document

References

For completeness here is the Bibtex file called references.bib. 

@article{zarebski2022computationally,
  doi =          {10.1371/journal.pcbi.1009805},
  author =       {Zarebski, {Alexander Eugene} AND {du Plessis}, Louis AND
                  Parag, {Kris Varun} AND Pybus, {Oliver George}},
  journal =      {PLOS Computational Biology},
  publisher =    {Public Library of Science},
  title =        {{A} computationally tractable birth-death model that combines
                  phylogenetic and epidemiological data},
  year =         2022,
  volume =       18,
  pages =        {1--22},
  number =       2
}

Bonus features

  • Adding a macro to help with annotations is useful. I have an example here.

Letter I

latex-letter-i.png 

\documentclass[12pt,a4paper]{letter}

% -------------------------------------------------------------------------------
%       PAPER MARGINS
%-------------------------------------------------------------------------------

\textwidth 5.50in
\textheight 9.25in
\oddsidemargin 0.40in
\evensidemargin 0.00in
\topmargin -0.50in
\longindentation 0.50\textwidth
\parindent 0.2in

%-------------------------------------------------------------------------------
%       SENDER INFORMATION
%-------------------------------------------------------------------------------

\def\Who{Alexander E. Zarebski}
\def\Where{Department of Zoology\\University of Oxford}
\def\Address{South Parks Road}
\def\CityZip{Oxford OX1 3SY}
\def\Email{alexander.zarebski@zoo.ox.ac.uk}
% \def\URL{http://www.rmit.edu.au/}

%-------------------------------------------------------------------------------
%       HEADER AND FROM ADDRESS STRUCTURE
%-------------------------------------------------------------------------------

\address{
\hspace{5in}
\vskip -1.1in~\\
~\\[-0.11in]
\hspace{\fill}\parbox[t]{2.85in}{
\footnotesize
\Who \\
\Where\\
\Address\\
\CityZip\\
\Email\\
% \URL
}
\hspace{-1.3in} % Horizontal position of this block
\vspace{-1in}
}

%-------------------------------------------------------------------------------
%       TO ADDRESS STRUCTURE
%-------------------------------------------------------------------------------

\def\opening#1{\thispagestyle{empty}
{\centering\fromaddress \vspace{1.5in} \\
\today \hspace*{\fill}\par}
{\raggedright \toname \\ \toaddress \par}
\vspace{0.5in} % White space after the to address
\noindent #1
}

%-------------------------------------------------------------------------------
%       SIGNATURE
%-------------------------------------------------------------------------------

\signature{\Who}

\long\def\closing#1{
\vspace{0.2in}
\noindent
% \hspace*{\longindentation} % Move the signature right
\parbox{\indentedwidth}{\raggedright
#1 % Print the signature text
\vskip 0.2in % Whitespace between the signature text and your name
\fromsig}}

% -------------------------------------------------------------------------------

\begin{document}

%-------------------------------------------------------------------------------
%       TO ADDRESS
%-------------------------------------------------------------------------------

\begin{letter}
  {
    Prof. Donald E. Knuth \\
    Computer Science Department \\
    Gates Building 4B \\
    Stanford University \\
    Stanford, CA 94305-9045 USA. \\
    \vspace{0.3in}
    \textbf{Re: Letters with \LaTeX}}

%-------------------------------------------------------------------------------
%       LETTER CONTENT
%-------------------------------------------------------------------------------

\opening{Dear Prof. Knuth,}\\

Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor
incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis
nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.
Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu
fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in
culpa qui officia deserunt mollit anim id est laborum.

\vspace{0.2in}
\closing{Kind Regards,}
%-------------------------------------------------------------------------------
\end{letter}
\end{document}

Letter II

latex-letter-ii.png 

\documentclass{letter}
\usepackage{graphicx}
\usepackage{lipsum}

% -------------------------------------------------------------------------------
%       PAPER MARGINS
%-------------------------------------------------------------------------------

\topmargin -0.70in
\textwidth 6.00in
\textheight 9.25in
\oddsidemargin 0.20in
\evensidemargin -0.20in

% -------------------------------------------------------------------------------
%       LETTER
%-------------------------------------------------------------------------------

\begin{document}

\begin{letter}{
    Admissions Committee \\
    Master of Science in Data Science Programme \\
    School of Computer Science and Engineering \\
    Nanyang Technological University \\
    Singapore}

\begin{minipage}[t]{0.48\textwidth}
    Dr Alexander E. Zarebski \\
    Lecturer in Applied Mathematics \\
    School of Mathematics \& Statistics \\
    University of Melbourne \\
    Peter Hall Building \\
    Parkville, VIC, 3010 \\
    Email: azarebski@unimelb.edu.au
\end{minipage}
\hfill
\begin{minipage}[t]{0.48\textwidth}
  \raggedleft
    \raisebox{-0.9\height}{\includegraphics[width=0.4\linewidth]{../resources/UoM_Logo_Vert_Housed_RGB.png}} % Adjust width as needed
\end{minipage}

\vspace{1cm}

\opening{Dear Admissions Committee,}
\vspace{5mm}

\lipsum[1-2] % Replace this with your actual letter content

\vspace{5mm}
\closing{Sincerely,\\[5mm]Alexander}

\end{letter}
\end{document}

Slides

\documentclass{beamer}
\usetheme{Madrid}
\usecolortheme{seagull}
\setbeamertemplate{navigation symbols}{}
\setbeamertemplate{footline}{}
\usefonttheme[onlymath]{serif}

\title{How to be cool}
\author{Arthur Herbert Fonzarelli}
\institute{Department of Cool, University of Cool}
\date{1 January 1974}

\begin{document}

\frame[plain]{\titlepage}

\begin{frame}[c]
  \frametitle{Foobar}
  123
\end{frame}

\begin{frame}[c]
  \frametitle{Barfoo}
  abc
\end{frame}

\end{document}

Pseudocode

Note that pseudocode is not the same as syntax highlighting; this example considers pseudocode, not real code. Installing the package can be a bit tricky, see the note below. 

\documentclass[preview,varwidth=true]{standalone}

\usepackage{algorithm}
\usepackage{algorithmic}

\begin{document}

\begin{algorithmic}
\REQUIRE $n \geq 0$
\ENSURE $y = x^n$
\STATE $y \leftarrow 1$
\STATE $X \leftarrow x$
\STATE $N \leftarrow n$
\WHILE{$N \neq 0$}
\IF{$N$ is even}
\STATE $X \leftarrow X \times X$
\STATE $N \leftarrow N / 2$
\ELSE[$N$ is odd]
\STATE $y \leftarrow y \times X$
\STATE $N \leftarrow N - 1$
\ENDIF
\ENDWHILE
\end{algorithmic}

\end{document}

Installing the algorithm package

  1. Download the algorithms package from CTAN.
  2. Unzip it and within the resulting directory compile the .sty files with latex algorithms.ins.
  3. Copy the .sty files to the same directory as your .tex and you can compile it with pdflatex.

(The dreaded) Gantt chart

gantt-chart.png 

\documentclass{standalone}
\usepackage{pgfgantt}

\begin{document}

\begin{ganttchart}[
  hgrid,
  vgrid,
  title/.style={fill=blue!20},
  title label font=\bfseries\color{black},
  bar/.style={fill=orange!50},
  bar height=0.7,
  group right shift=0,
  group height=.3,
  y unit chart=0.8cm
  ]{1}{12}

  \gantttitle{Week}{12} \\
  \gantttitlelist{1,...,12}{1} \\

  \ganttgroup{Preparation}{1}{3} \\
  \ganttbar{Choose recipe}{1}{1} \\
  \ganttbar{Buy ingredients}{2}{2} \\
  \ganttlinkedbar{Mix ingredients}{3}{3} \ganttnewline

  \ganttgroup{Baking}{4}{9} \\
  \ganttbar{Preheat oven}{4}{4} \\
  \ganttlinkedbar{Bake the cake}{5}{9} \ganttnewline

  \ganttgroup{Decoration}{10}{12} \\
  \ganttbar{Cool the cake}{10}{10} \\
  \ganttlinkedbar{Decorate the cake}{11}{12}
\end{ganttchart}

\end{document}

Latex notes

Basic styling

  • \underline{}
  • \textbf{}
  • \emph{}
  • \hl{} which requires the soul and color package (otherwise it just underlines)

Help! Where is the manual?

There is an unofficial reference manual that seems to be the best source of detailed information.

Lists

Customizing itemized lists: spacing

%% preamble
\usepackage{enumitem}

\begin{itemize}[topsep=-6pt, parsep=5pt]
\item foobar
\item foobar again
\end{itemize}

Customizing itemized lists: triangles

\usepackage{amsmath}
\usepackage{enumitem}
\setlist[itemize]{label=$\rhd$}

Macros: probability distributions

The following macros are useful for writing about probability distributions and conform to the notation used in Bayesian Data Analysis. 

%% ============================================================
%% Distribution macros following the notation from BDA.
\newcommand{\Uniform}[2]{\text{U}\left(#1,#2\right)}
\newcommand{\Normal}[2]{\text{N}\left(#1,#2\right)}
\newcommand{\Lognormal}[2]{\text{lognormal}\left(#1,#2\right)}
\newcommand{\GammaDist}[2]{\text{Gamma}\left(#1,#2\right)}
\newcommand{\Exponential}[1]{\text{Expon}\left(#1\right)}
\newcommand{\Beta}[2]{\text{Beta}\left(#1,#2\right)}
\newcommand{\Poisson}[1]{\text{Poisson}\left(#1\right)}
\newcommand{\Binomial}[2]{\text{Bin}\left(#1,#2\right)}
\newcommand{\NegativeBinomial}[2]{\text{Neg-bin}\left(#1,#2\right)}
\newcommand{\Prob}[1]{\text{Pr}\left(#1\right)}
\newcommand{\E}[1]{\text{E}\left(#1\right)}
\newcommand{\Variance}[1]{\text{var}\left(#1\right)}
%% ============================================================

Math styling

  • \underbrace{}_{}
  • {n\choose x} for binomial coefficients
  • \implies
  • \boldsymbol for bold math symbols

Writing new commands/macros

Here are a couple of simple examples. 

\newcommand{\R}{\mathbb{R}}
\newcommand{\bb}[1]{\mathbb{#1}}

Installation

Don't forget to install all the extra stuff 

sudo apt-get install texlive-full

Help! I'm missing a package

The following will install packages from CTAN 

tlmgr install <PACKGENAME>

Basic usage

See the basic document example with, there is also a letter template there too.

Getting correct table and figure labels in supplementary files

Add the following to the preamble 

% Make sure that both the tables and the figures have labels
% prefixed by a 'S'.
\let\oldthefigure\thefigure
\renewcommand{\thefigure}{S\oldthefigure}
\let\oldthetable\thetable
\renewcommand{\thetable}{S\oldthetable}

Compiling with bibtex

A typical compile.sh script will look like the following for a latex file main.tex 

MAIN_FILE=main

pdflatex $MAIN_FILE
pdflatex $MAIN_FILE
bibtex $MAIN_FILE
pdflatex $MAIN_FILE

Intermediate usage

Page layout

The geometry package makes it easy to set the margins of the pages. In the following, on line 1 the margin is used to set all margins to 7mm, and on line 2 the left and right margins are set to 5mm while the top and bottom are set to 10mm. 

\geometry{margin=7mm} % 1
\geometry{hmargin=5mm,vmargin=10mm} % 2

Using colour via xcolor

The following snippet defines the solarized colour palette which is a sensible starting point. 

\usepackage{xcolor}

\definecolor{base03}{HTML}{002b36}
\definecolor{base02}{HTML}{073642}
\definecolor{base01}{HTML}{586e75}
\definecolor{base00}{HTML}{657b83}
\definecolor{base0}{HTML}{839496}
\definecolor{base1}{HTML}{93a1a1}
\definecolor{base2}{HTML}{eee8d5}
\definecolor{base3}{HTML}{fdf6e3}
\definecolor{yellow}{HTML}{b58900}
\definecolor{orange}{HTML}{cb4b16}
\definecolor{red}{HTML}{dc322f}
\definecolor{magenta}{HTML}{d33682}
\definecolor{violet}{HTML}{6c71c4}
\definecolor{blue}{HTML}{268bd2}
\definecolor{cyan}{HTML}{2aa198}
\definecolor{green}{HTML}{859900}

Including source code with syntax highlighting

This makes use of the colours defined above. This will provide reasonable highlighting for R code. 

\usepackage{listings}

\lstset{
  language=R,
  linewidth=0.95\textwidth,
  xleftmargin=0.05\textwidth,
  basicstyle=\small\ttfamily\color{base02},
  backgroundcolor=\color{base3},
  showspaces=false,
  showstringspaces=false,
  showtabs=false,
  frame=single,
  frameround=tttt,
  float=p,
  rulecolor=\color{base03},
  tabsize=2,
  captionpos=b,
  breaklines=true,
  breakatwhitespace=false,
  keywordstyle=\color{base02},
  commentstyle=\color{base02},
  stringstyle=\color{cyan}
}

Compiling upon edits to files

You can recompile a PDF whenever a TeX file is updated using inotifywait as described in my linux notes.

Making notes on documents

The following is a useful way to make notes on a document. 

\usepackage{todonotes}          % enable the use of \todo[]{}.
\newcommand{\mytodo}[1]{\todo[color=yellow, bordercolor=yellow, size=\tiny]{ #1 }}

\mytodo{Here is a note!}

Older versions of the package have poor support for colouring and shadows but the following example might be useful. 

\usepackage[shadow]{todonotes}

% The colour support in todonotes is broken on the version of latex that is
% supported by Ubuntu 16.2 so you have to use this weird RGB + textcolor work
% around.

\definecolor{purple1}{rgb}{0.949, 0.941, 0.969}
% \definecolor{purple1}{HTML}{F2F0F7}
\definecolor{purple5}{rgb}{0.329, 0.153, 0.561}
% \definecolor{purple5}{HTML}{54278f}

\newcommand{\mytodo}[1]{\todo[
  color=purple1,
  bordercolor=purple5,
  size=\small,
  inline
  ]{\textcolor{purple5}{ #1 }}}

Viewing edits

Suppose you have an initial draft draft.tex and someone saves some revisions to revisions.tex, you can get a marked up version of the differences with the following 

latexdiff draft.tex revisions.tex > diff.tex
pdflatex diff.tex

Warning! If you are using latexdiff it can get a bit cranky if you change the layout of a table, for example by adding an extra column. If you find yourself with this sort of problem, it is easiest to just add an empty column in the same location in your original .tex file.

Making verbatim environments render nicely

Do yourself a favour and use the fancyvrb package. Here is a nice example 

\begin{Verbatim}[frame=single,framerule=0.5mm,framesep=2mm,label=Git Usage,xleftmargin=5cm,xrightmargin=5cm]
year,percentage
2015,69.3
2017,69.2
2018,87.2
2020,82.8
2021,93.43
\end{Verbatim}

Bibliography

Bibtex notes are here.

Equations

Putting a nice box around some equations

We can use the fancybox and empheq packages to create a nice box around some equations. 

\usepackage{empheq}
\usepackage{fancybox}

Note that we are setting the spacing around the box and the equations to be 10mm. 

\setlength{\fboxsep}{10mm}
\begin{empheq}[box=\ovalbox]{align*}
\frac{ds}{dt} &= -\beta si\\
\frac{di}{dt} &= \beta si - \gamma i\\
\frac{dr}{dt} &= \gamma i
\end{empheq}

Aligning multiple equations without an equation label

Remember to include \bverb|amsmath| in your preamble. The following example demonstrates how to align multiple equations. 

\begin{align*}
f(0) = f(1) &= 1 \\
f(n) &= f(n-1) + f(n-2)
\end{align*}

Aligning multiple equations with an equation label

\begin{equation}\label{eq:foo}
  \begin{aligned}
    f(0) = f(1) &= 1 \\
    f(n) &= f(n-1) + f(n-2)
  \end{aligned}
\end{equation}

N.b. using align* in place of aligned here is considered bad practise, but both will achieve the desired result.

Piece-wise defined functions

The following example is taken from a tex.stackexchange answer 

\usepackage{amsmath}

\[ f(x) = \begin{cases}
      0 & x\leq 0 \\
      \frac{100-x}{100} & 0\leq x\leq 100 \\
      0 & 100\leq x
   \end{cases}
\]

Doublespacing

To use doublespacing for lines add the following line to your preamble. 

\usepackage[doublespacing]{setspace}

% or

\usepackage{setspace}
\doublespacing

Page numbers

To remove page numbers include the nopageno package 

\usepackage{nopageno}

Timeline

Taken from this stackoverflow answer by Fran. 

\documentclass{article}
\usepackage{xcolor}
\newcommand\ytl[2]{
\parbox[b]{8em}{\hfill{\color{cyan}\bfseries\sffamily #1}~$\cdots\cdots$~}\makebox[0pt][c]{$\bullet$}\vrule\quad \parbox[c]{4.5cm}{\vspace{7pt}\color{red!40!black!80}\raggedright\sffamily #2.\\[7pt]}\\[-3pt]}
\begin{document}
\begin{table}
\caption{Timeline of something.}
\centering
\begin{minipage}[t]{.7\linewidth}
\color{gray}
\rule{\linewidth}{1pt}
\ytl{1947}{AT and T Bell Labs develop the idea of cellular phones}
\ytl{1968}{Xerox Palo Alto Research Centre envisage the `Dynabook'}
\ytl{1971}{Busicom 'Handy-LE' Calculator}
\ytl{1973}{First mobile handset invented by Martin Cooper}
\ytl{1978}{Parker Bros. Merlin Computer Toy}
\ytl{1981}{Osborne 1 Portable Computer}
\ytl{1982}{Grid Compass 1100 Clamshell Laptop}
\ytl{1983}{TRS-80 Model 100 Portable PC}
\ytl{1984}{Psion Organiser Handheld Computer}
\ytl{1991}{Psion Series 3 Minicomputer}
\bigskip
\rule{\linewidth}{1pt}%
\end{minipage}%
\end{table}
\end{document}

Figures

Replacing graphics with placeholders for drafts

You can replace figures with an empty box containing the name of the filepath to produce a smaller PDF (in about half the time) during the drafting process by giving the draft argument to the graphicx package as shown in the following example: 

\usepackage[draft]{graphicx}

Setting the graphics path

Suppose your figures live in a directory img. To include these figures, add the following to the preamble 

\usepackage{graphicx}
\graphicspath{ {./images/} }

then to include a figure in the document use the following 

\begin{figure}
  \centering
  \includegraphics[width=.7\linewidth]{name-of-figure-file}
  \caption{Here is a caption}
  \label{fig:figure-label}
\end{figure}

Cropping graphicss

You can crop the imported graphic: 

\includegraphics[trim=left bottom right top, clip]{file}

Making figure captions look nice

  • See here for information about table labels.

The following usage of the caption package tweaks the formatting of figure captions to distinguish them from the main text. 

\usepackage[
figurename=Figure,
font={sf,small},
format=plain,
labelfont=bf,
]{caption}
  • font specifies to use a small sans-serif font.
  • labelfont says to show the figure label in bold and the figurename declares that we want this labelled as a "Figure".

Linking and referencing

Within-document references

To label a section use \label{sec:cool-name} and to refer to link to it later use \ref{sec:cool-name}. The sec: prefix is not necessary, but it makes things clearer.

For finer control there is also the functions hypertarget and hyperlink provided by the hyperref package.

Linking to URL

The hyperref package provides functions to assist in generating hyperlinks. 

\href{https://aezarebski.github.io}{Amazing}
\url{https://aezarebski.github.io}

Style of figure labels

By default figures and tables are labelled with arabic numerals, eg "Figure 1". If you want to prefix these numbers with the letter 'S' for figures in the supplement, then you can use the following: 

\renewcommand{\thetable}{S\arabic{table}}
\renewcommand{\thefigure}{S\arabic{figure}}

If instead you want to label them with letters — which is what PLOS Comput. Biol. requests — then the following might help. 

\renewcommand{\thefigure}{\Alph{figure}}
\renewcommand{\thetable}{\Alph{table}}

Tables

  • See here for information about table labels.
\begin{table}
  \caption{\label{tab:demo}Go tabular data!}
  \centering
  \fbox{
    \begin{tabular}{lll}
Sepal Length & Sepal Width & Species\\
\hline
5.1 & 3.5 & setosa\\
4.9 & 3.0 & setosa\\
    \end{tabular}
  }
\end{table}

You can also use the fantastic Tables Generator webapp.

Wrapped text

\begin{tabular}{|p{1cm}|p{3cm}|}
  This text will be wrapped & Some more text \\
\end{tabular}

Table of contents

To adjust the depth to which sections are numbered, add the following to the preamble, adjusting the number to the desired level. 

\setcounter{secnumdepth}{1}

Table of special characters

The Wikibook has a full table of special characters, here are some that I need on the regular:

Latex Description Sample
\'{o} Acute accent ó
\^{o} Circumflex ô
\"{o} Umlaut ö
\c{c} Cedilla ç
\r{a} Ring over letter å
\o{} o with strike ø

Authors and affiliations

This is a minimal example demonstrating how to include multiple authors with their own affiliations. 

\documentclass{article}

\usepackage{authblk}            % provides author affiliations.

\title{Fleeb}
\date{}
\author[1]{Morty Smith\thanks{For correspondence email: yolo@hotmail.com}}
\author[2]{Rick Sanchez}
\affil[1]{Princeton University}
\affil[2]{School of Hard Knocks}

\begin{document}

\maketitle

Here is some text

\end{document}

Bibtex notes

bibtex-logo.png

Extract used citations

The script will print out all of the citations that have been used in a tex file which can be useful when fiddling around with bibtex stuff. 

library(argparse)

parser <- ArgumentParser()
parser$add_argument(
         "tex",
         default = "",
         help = "Input tex file."
       )

main <- function(args) {
  input_tex <- args$tex

  if (!file.exists(input_tex)) {
    stop("Could not find given file: ", input_tex)
  }

  tex_lines <- readLines(input_tex)

  non_comments <- grep(
    pattern = "^%",
    x = tex_lines,
    value = TRUE,
    invert = TRUE)

  cite_pattern <- "[[:alpha:]]+[[:digit:]]+[[:alpha:]]*"
  pattern <- sprintf("%s(,[ ]*%s)*", cite_pattern, cite_pattern)
  matches <- regmatches(non_comments, regexpr(pattern, non_comments))

  for (m in matches) {
    if (grepl(pattern = ",", x = m)) {
      for (mx in unlist(strsplit(x = m, ","))) {
        cat(mx, "\n")
      }
    } else {
      cat(m, "\n")
    }
  }
}

if (!interactive()) {
  args <- parser$parse_args()
  main(args)
}

BBL files and PLOS madness

PLOS journals require that you don't use a .bib file, instead they want you to compile a .bbl file and copy the contents of that into your .tex file at the end. An easy way to do this is outlined in the following stackexchange post:

https://tex.stackexchange.com/a/329201

Basically, this involves compiling a document from the following file where your references are in references.bib and then using the generated .bbl file. 

\documentclass[10pt,a4paper]{article}

\usepackage{hyperref} % for better urls


\begin{document}

This is text with \cite{foo1984bar}.

\nocite{*} % to test all bib entrys
\bibliographystyle{plos2015}
\bibliography{references} % file mwe.bib

\end{document}

If this is saved as demo.tex then you would make demo.bbl with the following commands 

pdflatex demo
bibtex demo
pdflatex demo
pdflatex demo

Citation command

There are two main commands for citation: citet and citep since cite is pretty much an alias of cite. The citep command is used for parenthetical citations and the citet is for when the citation is included as part of the sentence in which it appears.

Format examples

There are a bunch of useful examples available via yasnippet, I couldn't work out which package they come from, but they are there and very useful.

Newspaper article

For an online article, the following entry type can be used 

@article{lastname2021something,
  author  = {Smith, Alex},
  title   = {Something important happened},
  date    = {2021-03-02},
  journal = {BBC News},
  url     = {https://www.bbc.co.uk/news/blahblahblah},
  urldate = {2021-03-02}
}

The misc example may be useful if the publication method is less formal.

Technical report

@techreport{techreport,
  author =       {{Grabm{\"u}ller, Martin}},
  title        = {{M}onad {T}ransformers {S}tep by {S}tep},
  year         = 2006,
  note         = {Available in draft}
}

The unpublished format is pretty much the same.

Miscellaneous

@misc{graham2021how,
  author =       {Graham, Paul},
  title =        {{H}ow to {W}ork {H}ard},
  month =        {June},
  year =         2021,
  howpublished = {Available at \url{http://paulgraham.com/hwh.html}
                  (2021/06/30)}
}

This might be useful for blog posts and essays, although for news items see this example.

Example: Basic nice usage

\documentclass{article}
\usepackage[utf8]{inputenc}
\usepackage[english]{babel}

\usepackage[
natbib=true,
backend=bibtex,
maxcitenames=2,
style=authoryear
]{biblatex}

\addbibresource{references.bib}

\begin{document}

foobar

\printbibliography{}

\end{document}

The alphabetic style is the initials of the first author and the year.

Example: references when you are short on space

This is the same as the nice example above, but uses numeric-comp and some other tweaks to reduce the amount of space used by the references. 

\usepackage[
natbib=true,
backend=bibtex,
maxcitenames=1,
minbibnames=1,
maxbibnames=1,
style=numeric-comp
]{biblatex}
\renewcommand{\bibfont}{\small}        % small font (approx 10pt)
\defbibheading{bibliography}[\relax]{} % remove title
\setlength{\bibitemsep}{0mm}    % spacing

Character encoding trouble

If you are getting errors about there being non-ASCII characters in your bibtex file, the following command can help you to find them. 

LANG=C grep --color=always '[^ -~]\+' <path/to/bibliography.bib>

TikZ notes

Overleaf has a good TikZ introduction.

Environment

\documentclass[preview]{standalone}
\usepackage[utf8]{inputenc}

\usepackage{tikz}
\usetikzlibrary{positioning}

\begin{document}

\begin{figure}
  \begin{tikzpicture}

    % Put the marvelous tikz diagram code here!!!

  \end{tikzpicture}
\end{figure}

\end{document}

Example: basic diagram

\begin{tikzpicture}[
  roundnode/.style={circle, draw=green!60, fill=green!5, very thick, minimum size=7mm},
  squarednode/.style={rectangle, draw=red!60, fill=red!5, very thick, minimum size=5mm},
  ]

  % Nodes
  \node[squarednode]      (maintopic)                              {2};
  \node[roundnode]        (uppercircle)       [above=of maintopic] {1};
  \node[squarednode]      (rightsquare)       [right=of maintopic] {3};

  % Lines
  \draw[->] (uppercircle.south) -- (maintopic.north);
  \draw[->] (maintopic.east) -- (rightsquare.west);
  \draw[->] (rightsquare.north) .. controls +(up:7mm) and +(right:7mm) .. (uppercircle.east);

\end{tikzpicture}

There are definitions of how to draw roundnode and squarednode, followed by the declarations of these nodes in the diagram and the lines to draw between them. This compiles with pdflatex to give the following

tikz-example-basic-diagram.png

Author: Alexander E. Zarebski

Created: 2025-01-06 Mon 09:32

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