Viewing profile — dfsnow

DataSF (City & County of San Francisco) | Senior Data Engineer | Hybrid (in San Francisco) | Full-time | $156k-$196k DataSF is looking for a Senior Data Engineer to help us build o…

I was being a bit glib/imprecise before, but I'm specifically talking about the Northwestern Memorial campus downtown Chicago [0]. That location qualifies for 340B as a Rural Refer…

Thanks! Good to see other health policy wonks on HN

Hi, I wrote this article and largely agree with you. 340B is important and without it many hospitals likely wouldn't survive. However, it's pretty evident at this point that 340B h…

I actually tried a couple different engines before landing on OSRM. I started with R5 (since it can also do public transit) then switched to Valhalla. The main limiting factor was …

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 t…

Thanks! I hadn't seen anyone do it this way before with a very large, partitioned dataset, but it works shockingly well as long as you're not trying to `SELECT *` the entire table.…

Good point, will do!

It's just using OpenStreetMap tags for routing, so if a bridge is impassible by foot/bike according to OSM, then it won't be able to route there. See the Verrazano-Narrows Bridge i…

In the next year or so maybe. The biggest obstacles to adding public transit are: - Collecting all the necessary scheduling data (e.g. GTFS feeds) for every transit system in the c…

Hi HN! Today I'm launching OpenTimes, a free database of roughly 150 billion pre-computed, point-to-point travel times between United States Census geographies. In addition to lett…