Caption

It is usually beneficial to include caption to your images. To do so, simply use the command \caption{'text'} either below or above your figure (usually below for images and above for tables).

\begin{figure}
    \centering
    \includegraphics[width=0.5\textwidth]{CylinderImage.jpg}
    \caption{Caption written below figure.}
\end{figure}


\begin{figure}
    \centering
    \caption{Caption written above figure.}
    \includegraphics[width=0.5\textwidth]{CylinderImage.jpg}
\end{figure}

Customized captions

Defining your own caption

If you e.g. want to attach a source to your figures in a specific and consistent manner, a self-defined caption may be an option.

% In setup
\newcommand{\source}[1]{\vspace{-4pt}{\hfill \footnotesize{Source: {#1}} } }


% In document
\begin{figure}
    \centering
    \includegraphics[width=0.5\textwidth]{CylinderImage.jpg} 
    \caption{Flow around cylinder}
    \source{Your source}
\end{figure}

Caption package

The plain captions has a typeset as an ordinary paragraph, with no remarkable visual difference from the rest of the text. If you'd like to change this in any way possible, check out the documentation on the caption package.

Following is a short example displaying the caption package.

% In setup
\usepackage[font=it,labelfont=bf]{caption}


% In document
\begin{figure}[H]
    \centering
    \includegraphics[width=0.5\textwidth]{CylinderImage.jpg}
    \caption{Flow around cylinder}
\end{figure}

List of figures

A list of figures is included in your document by use of the command \listoffigures. As descriptions in the list of figures, the caption defined for each figure is used.

Supress caption in list of figures

To supress the Figure #: (or Table #: ), simply write your desired text without using the caption command. However, note that this will remove the figure from your list of figures as well.

\subsection{Caption Supress figure:}
\begin{figure}
    \centering
    \includegraphics[width=0.5\textwidth]{CylinderImage.jpg}
    \caption{Caption written using command}
\end{figure}

\begin{figure}
    \centering
    \includegraphics[width=0.5\textwidth]{CylinderImage.jpg} 
    
    Caption written without using command
\end{figure}

Specified caption in list of figures

If the figure caption is long, it is often desired to define another caption to be used in the list of figures. To do so, use the caption options \caption['short caption']{'long caption'}

\listoffigures
\begin{figure}
    \centering
    \includegraphics[width=0.5\textwidth]{CylinderImage.jpg}    
	\caption[Short caption]{Long caption}
\end{figure}

Figure environment

The most comman method to included images is using the Figure environment. 

\begin{figure}[placement specifier]
... figure contents ...
\end{figure}

Placement specifiers

The placement specifiers available when inserting figures are as shown in the table below. This table is taken from LaTeX Floats, Figures and Captions, so check it out for more detailed information.

It is also common to use the command \centering to center the image on the page. For example:

\begin{figure}
    \centering
    \includegraphics[width=0.5\textwidth]{CylinderImage.jpg}
\end{figure}

Label

To later reference your figure, include a label inside the environment. Note that the label has to be defined after the caption.

\begin{figure}[H]
    \centering
    \includegraphics[width=0.5\textwidth]{CylinderImage.jpg}
    \caption{Flow around cylinder}
    \label{fig:Flow around cyl}
\end{figure}


As seen in Figure \ref{fig:Flow around cyl} ...

Although we will not cover them here, there are many other options available when referencing. More information may be found at e.g. LaTeX Lables and Cross-referencing. One of these options are the command \autoref{'label'} in the package hyperref.

As seen in \autoref{fig:Flow around cyl} ...