Unfortunately, it's rather tricky to customize. I add a new setup to the source code whenever I do it, and not all the parameters can be edited in the editor.
You can move the graphs around by shift-clicking on them.
I might improve it, but don't hold your breath.
Shift+click was the key. Thanks.
I would never expect or press you to add features. (Same with Walter.) I'm just so grateful you and he have put in the effort to produce the tools you've produced and made available for free. I've learned a ton just from using them to help explain what we see.
I assembled a short slide-show video recently, revisiting some of Sydney flat earther Harry Baird's telephoto images that show the horizon against the near reference landmark of North Head at the entrance to Sydney harbor. Baird mistakenly interpreted the rising of the horizon as simply being able to see farther, but failed to comprehend the significance that a ship on the horizon at 30 miles distance (viewed from a height of 250 ft) was raised also and more visible (albeit squashed) while another ship at nearly the same distance on another day appeared lower along with the lower horizon, but was almost half obscured. He'd unwittingly captured a great example of a looming and the cliff edge of the headlands, only 3 miles away, provided a great vertical reference.
I think I can use your refraction app to show how that works, replacing the preset Hillhouse/Habitat preset with images of the headlands and a profile pic of one of the tankers Harry sighted. It works pretty good. I just need to tinker with the temperature profile a bit. If I draft up a video of me using your refraction tool, I'd love it if you'd have a look before I publish it publicly. I couldn't find a way to permalink it so that my image URLs and adjusted height/distance settings from the Hillhouse/Habitat preset remained intact.
Anyway, I know you have a lot on your plate. Don't want to ask too much. Thanks again for the great tool.