Dashboard extension idea: dynamic side plot of Teff vs logg (vs. [Fe/H]?)

[gully]

@SujayShankarUT and I were talking about an extension to the dashboard, in which the instantaneous position of Teff and logg are shown on a side plot. This layout would resemble the lightkurve TPF interact view

We could either show a 2D view or a 3D view, like this:

But with the current (Teff, logg) coordinated highlighted with a bigger, colorized circle for emphasis. So as you move the sliders around, the current highlighted grid point would jump around in the plot.

What's more is that we could enable a custom python callback, so that the user could click with the cursor on a particular grid point coordinate, and the spectrum shown would update to that (Teff, logg) pair. A technical implentation for this python callback design is available in the lightkurve interact source code

For a 2D view, some dimensions would have to be excluded by default. So yet another extension could be to use bokeh's dropdown or radio buttons to allow the user to select which pairs of physical properties they would like to view.

This is all really complicated and would likely be a ton of work, but could be a fun UI/UX visualization project, with both front-end and back-end development.