Border around Image

Question

I'm new to LaTeX. I'm using a template created by another person and I'd like to make a modification. The template uses a subfunction to create figures and I'd like to add a border to all images.

I currently insert a figure like this:

\munepsfig[width=5in]{CG289}{CG289}

The munepsfig is a sub function created in a .sty file. The sub function looks like this:

\newcommand{\munepsfig}[3][scale=1.0]{%
    \begin{figure}[!htbp]
        \centering
        \vspace{2mm}
        \includegraphics[#1]{figures/#2.png}
        \caption{#3}
        \label{fig:#2}
    \end{figure}
}

I've tried a number of suggestions from the internet but nothing seems to show up - the figure always shows with no change or the script fails. I'm just looking for a black border of a thickness I can choose.

Answer 1

To get a border for an image you can use the command \framebox{}. To define the width of the rule you can use command \setlength{\fboxrule}{0.5pt}.

Both combined leads to the following

\newcommand{\munepsfig}[4][scale=1.0]{% <===============================
    \begin{figure}[!htbp]
        \centering
        \vspace{2mm}
        \setlength{\fboxrule}{#4} % <===================================
        \framebox{\includegraphics[#1]{#2.png}} % <=====================
        \caption{#3}
        \label{fig:#2}
    \end{figure}
}

Now you can use the command

%\munepsfig[option]{figure}{caption}{fboxrule}
\munepsfig[width=5cm]{example-image}{caption of figure}{1pt}

to print the image example-image with an border of 1pt.

The complete MWE

\documentclass{article}

\usepackage{graphicx}

\newcommand{\munepsfig}[4][scale=1.0]{% <===============================
    \begin{figure}[!htbp]
        \centering
        \vspace{2mm}
        \setlength{\fboxrule}{#4} % <===================================
        \framebox{\includegraphics[#1]{#2.png}} % <=====================
        \caption{#3}
        \label{fig:#2}
    \end{figure}
}

\begin{document}

%\munepsfig[option]{figure}{caption}{fboxrule}
\munepsfig[width=5cm]{example-image}{caption of figure}{1pt}

\munepsfig[width=5cm]{example-image-a}{caption of figure2}{0.5pt}

\end{document}

gives you:

To get rid of the space between image and rule use command \setlength{\fboxsep}{0pt}. See the following new MWE

\documentclass{article}

\usepackage{graphicx}

\newcommand{\munepsfig}[4][scale=1.0]{% <===============================
    \begin{figure}[!htbp]
        \centering
        \vspace{2mm}
        \setlength{\fboxrule}{#4} % <===================================
        \setlength{\fboxsep}{0pt} % <===================================
        \framebox{\includegraphics[#1]{#2.png}} % <=====================
        \caption{#3}
        \label{fig:#2}
    \end{figure}
}

\begin{document}

%\munepsfig[option]{figure}{caption}{fboxrule}
\munepsfig[width=5cm]{example-image}{caption of figure}{1pt}

\munepsfig[width=5cm]{example-image-a}{caption of figure2}{0.5pt}
\end{document}

resulting in the pdf:

Answer 2

With pstricks it is fairly easy to achieve this.

 \documentclass{article}
 \usepackage{pstricks}
 \usepackage{graphicx}
 \newcommand{\munepsfig}[4][scale=1.0]{%
     \begin{figure}[!htbp]
         \centering
         \vspace{2mm}
         \psframebox[linewidth=#4]{\includegraphics[#1]{figures/#2.eps}}
         \caption{#3}
         \label{fig:#2}
     \end{figure}
 }

 \begin{document}
 \munepsfig[scale=0.5]{MarmotOutlook}{Outlook.}{2pt}

 \end{document}

EDIT: Now the same thing with TiKz:

 \documentclass{article}
 \usepackage{tikz}
 \usepackage{graphicx}
 \newcommand{\munepsfig}[4][scale=1.0]{%
     \begin{figure}[!htbp]
         \centering
         \vspace{2mm}
         \tikz\node[draw=black,line width=#4](#2){\includegraphics[#1]{figures/#2.png}};
         \caption{#3}
         \label{fig:#2}
     \end{figure}
 }

 \begin{document}
 \munepsfig[scale=0.5]{MarmotOutlook}{Outlook.}{2pt}

 \end{document}