It’s still interesting/useful, though. Once you require factoring in average train wait times and stuff like that the project is going to be way too complex to ever be achievable.
for sure, it's still useful, but i think it might be worth some sort of down-weighting for trains that run less frequently.
for example, if the ratio of local:express trains is 5:1, the watershed should be more heavily influenced by what's accessible in 40 minutes via local.
this is also in part due to the way people use the subway in NY -- nobody looks at a timetable and says "i'll head down to the station to catch the 6:37 express" like you would in some cities with reliable timetables/schedules. in NY, you just go to the station and wait and hope the train you want shows up next/soon.
> this is also in part due to the way people use the subway in NY -- nobody looks at a timetable and says "i'll head down to the station to catch the 6:37 express" like you would in some cities with reliable timetables/schedules. in NY, you just go to the station and wait and hope the train you want shows up next/soon.
That was true 15 years ago, but it's less true today now that there's a multitude of apps (both the first-party MyMTA app and many third-party apps which are much better) which make this easy.
Even Google Maps gives train times in their directions, and they're mostly accurately updated as delays happen, etc.
I've used the arrival time on Google maps and it seems accurate enough but the A train run so often it's not really an issue so I rarely if ever look. Plus I use mta.info for updates to check for delays.
for example, if the ratio of local:express trains is 5:1, the watershed should be more heavily influenced by what's accessible in 40 minutes via local.
this is also in part due to the way people use the subway in NY -- nobody looks at a timetable and says "i'll head down to the station to catch the 6:37 express" like you would in some cities with reliable timetables/schedules. in NY, you just go to the station and wait and hope the train you want shows up next/soon.