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merge patch-1, restructure, fix grammar
This commit is contained in:
Colton Kohnke
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@ -6,28 +6,23 @@ contributors:
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- ["Sricharan Chiruvolu", "http://sricharan.xyz"]
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filename: learn-latex.tex
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---
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LaTeX is known to create aesthetically pleasing documents without you worrying
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about the formatting. It is also great if one wants to create documents
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containing a lot of mathematics. Getting a good document is very easy, but
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getting it to behave exactly the way you want can be a bit hairy.
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```latex
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% All comment lines start with %
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% There are no multi-line comments
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% LaTeX is NOT a ``What You See Is What You Get'' word processing software like
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% LaTeX is NOT a "What You See Is What You Get" word processing software like
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% MS Word, or OpenOffice Writer
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% Every Latex command starts with a backslash (\)
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% LaTeX documents start with a defining the type of document it's compiling
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% Other document types include book, report, presentations, etc.
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% The options for the document appear in the [] brackets. In this case
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% it specifies we want to use 12pt font.
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\documentclass[12pt]{article}
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% Next we define the packages the document uses.
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% If you want to include graphics, colored text or
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% source code from a file into your document,
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% If you want to include graphics, colored text, or
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% source code from another language file into your document,
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% you need to enhance the capabilities of LaTeX. This is done by adding packages.
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% I'm going to include the float and caption packages for figures.
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\usepackage{caption}
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@ -42,13 +37,13 @@ getting it to behave exactly the way you want can be a bit hairy.
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% Everything before this line is called "The Preamble"
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\begin{document}
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% if we set the author, date, title fields, we can have LaTeX
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% create a title page fo us.
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% create a title page for us.
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\maketitle
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% Most research papers have abstract, you can use the predefined commands for this.
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% This should appear in its logical order, therefore, after the top matter,
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% but before the main sections of the body.
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% This command is available in document classes article and report.
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% This command is available in the document classes article and report.
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\begin{abstract}
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LaTex documentation written as LaTex! How novel and totally not my idea!
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\end{abstract}
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@ -61,71 +56,98 @@ Hello, my name is Colton and together we're going to explore LaTeX !
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\section{Another section}
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This is the text for another section. I think it needs a subsection.
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\subsection{This is a subsection}
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\subsection{This is a subsection} % Subsections are also intuitive.
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I think we need another one
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\subsubsection{Pythagoras}
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Much better now.
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\label{subsec:pythagoras}
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% By using the asterisk we can suppress Latex's inbuilt numbering.
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% This works for other Latex commands as well.
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\section*{This is an unnumbered section}
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However not all sections have to be numbered!
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\section{Some Text notes}
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LaTeX is generally pretty good about placing text where it should go. If
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a line \\ needs \\ to \\ break \\ you add \textbackslash\textbackslash to
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the text. In case you haven't noticed the \textbackslash is the character
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the tells the LaTeX compiler it should pay attention to what's next.
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the source code. \\
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\section{Lists}
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Lists are one of the easiest things to create in Latex! I need to go shopping
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tomorrow, so let's make a grocery list.
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\begin{enumerate} % This creates an "enumerate" environment.
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% \item tells the enumerate to increment
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\item Salad.
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\item 27 watermelon.
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\item A single jackrabbit.
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% we can even override the item number by using []
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\item[how many?] Medium sized squirt guns.
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Not a list item, but still part of the enumerate.
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\end{enumerate} % All environments must have an end.
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\section{Math}
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One of the primary uses for LaTeX is to produce academic article or
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One of the primary uses for LaTeX is to produce academic articles or
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technical papers. Usually in the realm of math and science. As such,
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we need to be able to add special symbols to our paper! \\
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Math has many symbols, far beyond what you can find on a keyboard.
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Set and relation symbols, arrows, operators, Greek letters to name a few. \\
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Math has many symbols, far beyond what you can find on a keyboard;
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Set and relation symbols, arrows, operators, and Greek letters to name a few.\\
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Sets and relations play a vital role in many mathematical research papers.
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Here's how you state all y that belong to X, $\forall$ x $\in$ X.
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Notice how I needed to add \$ signs before and after the symbols. This is
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because when writing, we are in text-mode. However, the math symbols only exist
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in math-mode. We can enter math-mode from text mode with the \$ signs.
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The opposite also holds true. Variable can also be rendered in math-mode. \\
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Here's how you state all y that belong to X, $\forall$ x $\in$ X. \\
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% Notice how I needed to add $ signs before and after the symbols. This is
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% because when writing, we are in text-mode.
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% However, the math symbols only exist in math-mode.
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% We can enter math-mode from text mode with the $ signs.
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% The opposite also holds true. Variable can also be rendered in math-mode.
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My favorite Greek letter is $\xi$. I also like $\beta$, $\gamma$ and $\sigma$.
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I haven't found a Greek letter that yet that Latex doesn't know about!
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Operators are essential parts of a mathematical document: trigonometric functions
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(sin, cos, tan), logarithms and exponentials (log, exp), limits (lim) e.t.c. have
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pre-defined LaTeX commands. Let's write an equation to see how it's done: \\
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Operators are essential parts of a mathematical document:
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trigonometric functions ($\sin$, $\cos$, $\tan$),
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logarithms and exponentials ($\log$, $\exp$),
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limits ($\lim$), etc.
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have per-defined LaTeX commands.
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Let's write an equation to see how it's done: \\
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$\cos$ (2$\theta$) = $\cos$^2 $\theta$ - $\sin$^2 $\theta$
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$\cos(2\theta) = \cos^{2}(\theta) - \sin^{2}(\theta)$
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Fractions(Numerator-denominators) can be written in these forms:
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% 10 / 7
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^10/_7
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$^{10}/_{7}$
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% Relatively complex fractions can be written as
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% \frac{numerator}{denominator}
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$\frac{n!}{k!(n - k)!}$
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$\frac{n!}{k!(n - k)!}$ \\
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We can also insert equations in an "equation environment."
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% Display math with the equation 'environment'
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\begin{equation} % enters math-mode
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c^2 = a^2 + b^2.
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% for cross-reference
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\label{eq:pythagoras}
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\end{equation} % all \begin statments must have an end statement
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\label{eq:pythagoras} % for referencing
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\end{equation} % all \begin statements must have an end statement
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We can then reference our new equation!
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Eqn.~\ref{eq:pythagoras} is also known as the Pythagoras Theorem which is also
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the subject of Sec.~\ref{subsec:pythagoras}.
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the subject of Sec.~\ref{subsec:pythagoras}. A lot of things can be labeled:
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figures, equations, sections, etc.
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Summations and Integrals are written with sum and int commands:
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\begin{equation} % enters math-mode
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\sum_{i=0}^{5} f_i
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\int_0^\infty \mathrm{e}^{-x}\,\mathrm{d}x
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% Some latex compilers will complain if there are blank lines
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% In an equation environment.
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\begin{equation}
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\sum_{i=0}^{5} f_{i}
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\end{equation}
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\begin{equation}
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\int_{0}^{\infty} \mathrm{e}^{-x} \mathrm{d}x
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\end{equation}
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\section{Figures}
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@ -133,40 +155,56 @@ Summations and Integrals are written with sum and int commands:
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Let's insert a Figure. Figure placement can get a little tricky.
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I definitely have to lookup the placement options each time.
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\begin{figure}[H]
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\centering
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\begin{figure}[H] % H here denoted the placement option.
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\centering % centers the figure on the page
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% Inserts a figure scaled to 0.8 the width of the page.
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%\includegraphics[width=0.8\linewidth]{right-triangle.png}
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% Commented out for compilation purposes. Use your imagination.
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% Commented out for compilation purposes. Please use your imagination.
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\caption{Right triangle with sides $a$, $b$, $c$}
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\label{fig:right-triangle}
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\end{figure}
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\subsection{Table}
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Let's insert a Table.
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We can also insert Tables in the same way as figures.
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\begin{table}[H]
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\caption{Caption for the Table.}
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\begin{tabular}{ccc}
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Number & Last Name & First Name \\
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\hline
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% the {} arguments below describe how each row of the table is drawn.
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% Again, I have to look these up. Each. And. Every. Time.
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\begin{tabular}{c|cc}
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Number & Last Name & First Name \\ % Column rows are separated by $
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\hline % a horizontal line
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1 & Biggus & Dickus \\
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2 & Monty & Python
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\end{tabular}
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\end{table}
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% \section{Hyperlinks}
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% \section{Hyperlinks} % Coming soon
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\section{Getting Latex to not compile something (i,e, Source Code)}
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Let's say we want to include some code into our Latex document,
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we would then need Latex to not try and interpret that text and
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instead just print it to the document. We do this we a verbatim
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environment.
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% There are other packages that exist (i.e. minty, lstlisting, etc.)
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% but verbatim is the bare-bones basic one.
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\begin{verbatim}
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print("Hello World!")
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a%b; % look! We can use % signs in verbatim.
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random = 4; #decided by fair random dice roll
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\end{verbatim}
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\section{Compiling}
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By now you're probably wondering how to compile this fabulous document
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(yes, it actually compiles). \\
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and look at the glorious glory that is a Latex pdf.
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(yes, this document actually does compiles). \\
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Getting to the final document using LaTeX consists of the following steps:
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\begin{enumerate} % we can also created numbered lists!
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\item Write the document in plain text
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\item Compile plain text document to produce a pdf.
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The compilation step looks something like this: \\
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% Verbatim tells the compiler to not interpret.
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\begin{enumerate}
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\item Write the document in plain text (the "source code").
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\item Compile source code to produce a pdf.
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The compilation step looks something like this (in Linux): \\
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\begin{verbatim}
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$pdflatex learn-latex.tex learn-latex.pdf
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\end{verbatim}
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@ -191,5 +229,3 @@ That's all for now!
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* The amazing LaTeX wikibook: [https://en.wikibooks.org/wiki/LaTeX](https://en.wikibooks.org/wiki/LaTeX)
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* An actual tutorial: [http://www.latex-tutorial.com/](http://www.latex-tutorial.com/)
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