[hatthew]

Very cool! I love the interactive map, but have a couple UX suggestions:

I usually expect most features of a map to be zoom invariant, with the exception of level of detail. Having the colormap change is surprising, particularly that longer time buckets simply disappear as I zoom in. The two problems with this are that any time I zoom in or out I now have to double check the color key in case it's changed, and if I want to find a travel time for something far away I need to zoom in to find the destination and then back out to see the travel time. Perhaps you can let the user manually choose the colormap granularity/range, or find some way to have a colormap that works at all scales?

Second suggestion, related, is to display the travel time next to the geography ID in the bottom left corner. This would mitigate the issues with getting a good colormap, since I can then just hover over a geography to get its time anywhere that the colormap isn't sufficient.

[dfsnow]

These are great suggestions, thank you!

I played around with a single static colormap for all scales but couldn't find one that worked well/looked good. Perhaps I'll add a slider that lets you manually select the values of the legend.

The second suggestion is a no-brainer. I'll definitely get that added.

[jonny_eh]

Maybe it sticks to whatever colors are initially shown, and there's a button to "reset colors"?