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wklumpen / equity-pulse-web

Equity Pulse is a web application and visualization platform using Flask+D3 to support equity and access calcualtions for TransitCenter/SSR/SF2 Work
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Update transit-car ratios to fixed bins #24

Closed wklumpen closed 3 years ago

wklumpen commented 3 years ago

If possible: legend for Transit-Car ratios of travel times as set, rather than percentile-based, bins: <1, <2, <3, <4, >4. I think it's easy to understand what equal travel time vs. travel time that's 4x as long means, and there is a certain value to identifying the areas that have consistently competitive transit service - as fast or faster than traveling by car.

wklumpen commented 3 years ago

Are we reasonably confident this will work consistently across all regions/dates? If so, I can plan to update this.

wklumpen commented 3 years ago

@dana-rg @aakarner I wonder if you have thoughts on this request.

dana-rg commented 3 years ago

@wklumpen I think this is a good idea and I would think it would work ok across regions / destination types at least in principle. There may be some areas where there is quite a bit above 4, but I guess we could see. And I wonder how many are <1 though I can see the value in having a bin to show that its none if that's the case. Would we do the same for the primal measures? Right now those are set as transit access / auto access so they are <1 so the explanation is the opposite, but this could be switched (e.g. 4 times as many jobs reachable by car).

wklumpen commented 3 years ago

I really don't think the primal measures will work, since they aren't normalized in any way (the ratios are somewhat). The pure scale of accessible jobs is so different in cities.

dana-rg commented 3 years ago

Yeah... that makes sense. Scratch that comment.

wklumpen commented 3 years ago

Shelving this for a future update/consideration.

wklumpen commented 3 years ago

Made the update, looks good! Will be reflected when I push v1.0.0

fixed_ratios