\verb and align

Question

I am getting an error when I am using the verb command in align.

I prefer not to use \texttt because the underscore isn't the right length for a single underscore or a double underscore - the right length is somewhere in the middle.

Here's my code:

\begin{align}
    \Verb|Phot_Flag| 0 \\
    \Verb{class_star} > 0.9
\end{align}

Answer 1

There is an examplep package you can use.

\documentclass[12pt,a4paper]{article}
\usepackage{amsmath}
\usepackage{examplep}
\begin{document}

\begin{align}
    \PVerb{Phot_Flag } 0 \\
    \PVerb{class_star} > 0.9
\end{align}

\end{document}

Answer 2

You just need to detokenize the input, if all you want is being able to use _.

\documentclass{article}
\usepackage{amsmath}

\newcommand{\vtt}[1]{%
  \text{\normalfont\ttfamily\detokenize{#1}}%
}

\begin{document}

\begin{align}
\vtt{Phot_Flag}  &= 0 \\
\vtt{class_star} &> 0.9
\end{align}

\end{document}

Answer 3

An approach using verbatimbox.

\documentclass{article}
\usepackage{verbatimbox,amsmath}
\begin{document}
\begin{myverbbox}{\PF}Phot_Flag\end{myverbbox}
\begin{myverbbox}{\CS}class_star\end{myverbbox}
\begin{align}
    \PF &= 0 \\
    \CS &> 0.9
\end{align}
\end{document}

You can also give optional directives to the verb boxes:

\documentclass{article}
\usepackage{verbatimbox,amsmath,xcolor}
\begin{document}
\begin{myverbbox}[\scriptsize]{\PF}Phot_Flag\end{myverbbox}
\begin{myverbbox}[\itshape]{\CS}class_star\end{myverbbox}
\begin{align}
    \PF &= 0 \\
    \CS &> 0.9
\end{align}
\end{document}