I would like to see other similar or different ways of resizing the strokes when drawing a grid with the help lines option when a dashed pattern is used. Here's an example below.
\documentclass{article}
\usepackage{tikz}
\tikzstyle{dashdotted}=[dash pattern=on 9pt off 2pt on \the\pgflinewidth off 2pt]
\begin{document}
\begin{tikzpicture}
\draw[help lines, dashdotted, xstep=1.3cm, ystep=1.6cm] (0,0) grid (16,8);
\end{tikzpicture}
\end{document}
I used this example:TikZ: Get values for predefined dash patterns
Best Answer
The styles listed in the post you linked are already defined in TikZ, you do not need to create a new style to use them.
You can create a style if you need a pattern that doesn't exist. For example,
mygridstyle
in my MWE creates a style with a sequence of dashes with a length of 8pt, 6pt, 4pt, and 2pt separated by a space of 4pt.