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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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Question: about job access by car # on Story page #89

Closed mlbtc closed 3 years ago

mlbtc commented 3 years ago

What is the region that you used for the the "average job access by cars" that have been added to each of the Story pages?

I used the MSA for my estimates that I included on the Additions to Regional story Page google doc. Did you use the Urban core (which would be ideal?)

I'm wondering why the numbers are so different. E.g. Washington DC -- my estimate was 1,053,524 but yours is 1,931,451

mlbtc commented 3 years ago

I've figured it out - the numbers added to the story page are the urban core residents' average access to jobs.

wklumpen commented 3 years ago

Was just about to type this! :)

wklumpen commented 3 years ago

For posterity, the calculation is as follows:

T = C000_P_c45_AM_autoN_fareN in the urban region for population group pop_total Q = C000_P_c45_AM_autoY_fareN in the urban region for population group pop_total

Since Q is the Transit:Auto ratio, auto access is calculated as T*(1/Q)