Here is a link to download the twelve hyperspectral images used in ‘Statistics of cone responses to natural images: implications for visual coding’ (1998) by Ruderman, Daniel L and Cronin, Thomas W and Chiao, Chuan-Chin. A basic conversion of the hyperspectral data to RGB can be seen above.
I’ve included a short script on how to read the data in python. Feel free to reach out if there are any issues.
]]>\bar{} or \hat{} make you want to yawn? Even worse, is the boredom induced by these markers causing you to fall behind in classes?
I say out with the old, in with the new, so check out these hats. Engaging enough to get you that A, subtle enough to let the math do the talking.
BibTeX entry for post:
@misc{belsten2023hats,
author = {Belsten, Alexander},
title = {Modernizing Hat Operators in Latex},
howpublished = "\url{https://belsten.github.io/blog/latex-hats/}",
date = {2023-03-30}
}
How to reproduce:
\documentclass{article}
\usepackage{pict2e}
\DeclareRobustCommand{\howdyhat}{
\begingroup\setlength{\unitlength}{\fontcharht\font`A}
\begin{picture}(.5,1)
\roundcap
\put(-0,-.15){\line(-1,1.5){0.11}}
\put(0.5,-.15){\line(1,1.5){0.11}}
\put(-0,-.15){\line(1,0){0.5}}
\put(0.1,-.15){\line(0,1){0.2}}
\put(0.4,-.15){\line(0,1){0.2}}
\put(0.1,0.05){\line(1,1){0.075}}
\put(0.4,0.05){\line(-1,1){0.075}}
\put(0.18,0.12){\line(1,-1){0.065}}
\put(0.32,0.12){\line(-1,-1){0.065}}
\end{picture}
\endgroup
}
\DeclareRobustCommand{\partyhat}{
\begingroup\setlength{\unitlength}{\fontcharht\font`A}
\begin{picture}(.5,1)
\roundcap
\put(-0,-.15){\line(1,3){0.25}}
\put(-0,-.15){\line(1,0){0.5}}
\put(0.5,-.15){\line(-1,3){0.25}}
\put(-0,-.15){\line(1,.5){0.4}}
\put(0.09,0.075){\line(1,.5){0.27}}
\put(0.17,0.3){\line(1,.5){0.13}}
\end{picture}
\endgroup
}
\DeclareRobustCommand{\abehat}{
\begingroup\setlength{\unitlength}{\fontcharht\font`A}
\begin{picture}(.5,1)
\roundcap
\put(-0.1,-.15){\line(1,0){0.75}}
\put(0.12,-.05){\line(1,0){0.32}}
\put(0.1,-.15){\line(0,1){0.7}}
\put(0.45,-.15){\line(0,1){0.7}}
\put(0.1,0.55){\line(1,0){0.35}}
\end{picture}
\endgroup
}
\DeclareRobustCommand{\witchhat}{
\begingroup\setlength{\unitlength}{\fontcharht\font`A}
\begin{picture}(.5,1)
\roundcap
\put(-0.15,-.15){\line(1,0){0.85}}
\put(0.02,-.15){\line(1,3){0.25}}
\put(0.52,-.15){\line(-1,3){0.25}}
\end{picture}
\endgroup
}
\newcommand\popacaponit[2]{\mathrel{\stackrel{\makebox[0pt]{\mbox{$#2$}}}{#1}}}
\newcommand\howdy[1]{\popacaponit{#1}{\howdyhat}}
\newcommand\party[1]{\popacaponit{#1}{\partyhat}}
\newcommand\abe[1]{\popacaponit{#1}{\abehat}}
\newcommand\witch[1]{\popacaponit{#1}{\witchhat}}
\begin{document}
\begin{equation}
\howdy{x} \ \ \ \ \party{x} \ \ \ \ \abe{x} \ \ \ \ \witch{x}
\end{equation}
\end{document}