algorithm2eerrorssubfloats
Whenever I am trying to use the subfigure or the algorithm2e package using \usepackage command, it is showing
LaTeX Error: Can be used only in preamble.
What is the problem and how to get rid of it. If there is any substitute for the two packages without using the above ones, kindly let me know.
i suspect that you looking for the following result:
your code has more issues:
\captionsetup is not clear. in your mwe you not use captioni suggest not to use subfugure. instead it standard tabular will do the job better:
\documentclass[twoside]{article} %Two-sided document. Required for fancyhf left and right page numbering scheme current.
\usepackage[letterpaper,
margin=0.5in,
bottom=0.75in,
top=0.7in]{geometry} %Ensure the
%\usepackage{graphicx} % is loaded by adjustbox
%\usepackage{fancyhdr} %Use the package fancy header/footer paper is letterpaper. not used in this mwe
%\usepackage{grffile} % i haven't this package
\usepackage{caption}
%\usepackage{float} %Float used to position graphics. better not to use
\usepackage{lastpage209} %For last page -- it is rather obsolete ...
\usepackage[table,x11names,dvipsnames,table]{xcolor}
\definecolor{Oddrows}{rgb}{ 0.84,0.84,0.84 }
\definecolor{Evenrows}{rgb}{ 1,1,1 }
\usepackage{booktabs,array,arydshln}
\usepackage[export]{adjustbox}
\usepackage{caption}
\usepackage{subcaption}
\usepackage{siunitx} % new, for nicer aligning of numbers in table
\usepackage{etoolbox} % new, for making command \bfseries robust
\begin{document}
\begin{center}
\robustify\bfseries % <---
\begin{tabular}{cc}
\includegraphics[trim={0 0 0 0},clip, valign=c, width=2.5in]{example-image-duck}
&
\rowcolors{2}{Oddrows}{Evenrows}
\begin{tabular}{>{\raggedright}p{0.5in} S[table-format=2.4,
detect-weight]}
\toprule
\multicolumn{1}{c}{\textbf{Display Freq.}}
& \bfseries 29.4 \\
\midrule
Peak Tan. & 62.4416 \\
Peak Sag. & 62.6273 \\
Peak Avg. & 62.5345 \\
Best Pos. & 1 \\
\bottomrule
\end{tabular}
\end{tabular}
\end{center}
\end{document}
The solution to this problem was provided by David Carlisle in the comments section. It involves wrapping the \makebox[size][position]{text} command by extra curly brackets to hide the optional arguments of size and position so that the \makebox command won't raise the error it does as shown in the question.
\documentclass[addpoints, 12pt]{exam}
\pagestyle{headandfoot}
\lhead{\large\bfseries Foundations of Mathematics (MATH113)\\ Midterm Exam, December 21, 2021}
\chead{}
\rhead[\large\bfseries Name:\enspace{\makebox[2in]{\hrulefill}}]{}
\lfoot{}
\cfoot[]{Page \thepage}
\rfoot{}
\begin{document}
\begin{center}
\fbox{\fbox{\centering Minimum Working Example}}
\end{center}
\end{document}
Best Answer
If your document looks like
then you get the error
showing that the problem is the
\usepackageon line 5, which should be in the preamble (that is, before\begin{document}0 so changing the file toit runs without error.