Reasons for building WindRose.xyz
I built this out of frustration with existing options for making windrose charts. Moreover it was a project to improve my web development skills and checking out some libraries and frameworks I wanted to learn.
Tips for further editing
Downloading the windrose chart as SVG is recommended. SVG is a terrific vector graphics format that most people don't seem to know about. What makes SVG so good is that – unlike PNG – it's very editable! You can edit text, drag individual elements around, change colors and much more with a vector editing program like Inkscape (free & open-source), Adobe Illustrator, or Sketch. What's more, as their name suggests, SVG's are scaleable.
If you know a little about SVG syntax you can open it in a text editor (like VS Code) and edit it directly.