NYC Bike Stats
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NYC Bike Stats
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Re: NYC Bike Stats
#2Is it just me or are line charts with fills harder to interpret while not adding any value over normal line charts? Instead they add ambiguity because while the surface itself doesn't seem to mean anything (?), it does have two bounding lines and depending on the graph only the upper or lower bound is the line which contains actual data - the other one is the line with the data from one of the other data sets. At least that what I make out of it but maybe I'm completely wrong?
E.g. take the first graph: the red surface starts at 0 and the upper bound is the actual 'overall ridership' for Second Avenue, right? (note to author: even when the units seem obvious to you, they might not actually be obvious for everyone). So the lower bound of the green surface (Lafayette Street) has the same shape as the data for Second Avenue. Why? What does that mean? It's just the upper bound of the green surface which is the actual data for Lafayette street, no?
On topic: glad to see bicycle usage is rising, but would be interesting to see if e.g. car usage is declining and how the total number of people on the road is changing.
Re: NYC Bike Stats
#3Also interesting to see the breakdown of usage of the Citi bikes. Does increased usage of Citi bikes lead more casual users who don't wear helmets?
Re: NYC Bike Stats
#4Nice analysis but Excel default color schemes are unbearable. I wonder how many people their hideousness turns away before even contemplating the data.
Re: NYC Bike Stats
#5Is it just me or are line charts with fills harder to interpret while not adding any value over normal line charts? Instead they add ambiguity because while the surface itself doesn't seem to mean anything (?), it does have two bounding lines and depending on the graph only the upper or lower bound is the line which contains actual data - the other one is the line with the data from one of the other data sets. At lea…
The surface is the data. E.g. the ridership for Lafayette Street is the upper line of the green area, minus the lower line of the green area. This is called an area chart and is used to show cumulative data and how each part contributes to the whole. In this case it shows the total NYC ridership increasing from ~7000 to ~18000 (units are unclear!), while e.g. the Central Park West ridership has remained approximately constant.
Re: NYC Bike Stats
#6The article says they do the survey on a particular day each year whereas the data set is less specific on that fact. Surely they do the survey over multiple days...? If available, there must be a ton of citibike usage data one could use to verify the citibike stats collected by this survey and generally validate this data a bit.
Re: NYC Bike Stats
#7The article says they do the survey on a particular day each year whereas the data set is less specific on that fact. Surely they do the survey over multiple days...? If available, there must be a ton of citibike usage data one could use to verify the citibike stats collected by this survey and generally validate this data a bit.
Why they not rather contact with Fitbit, Garmin, Under Armour, etc. to provide data?
Re: NYC Bike Stats
#8Also interesting to see the breakdown of usage of the Citi bikes. Does increased usage of Citi bikes lead more casual users who don't wear helmets?
I'd expect so. If I had my own bike I'd wear s helmet, but can't be bothered on Citi bike.
Re: NYC Bike Stats
#9The article says they do the survey on a particular day each year whereas the data set is less specific on that fact. Surely they do the survey over multiple days...? If available, there must be a ton of citibike usage data one could use to verify the citibike stats collected by this survey and generally validate this data a bit.
Why they not rather contact with Fitbit, Garmin, Under Armour, etc. to provide data?
Perhaps because it would be biased? Cyclist population who wears fitness trackers might look different than the population of all cyclists. So now you have sampling bias to deal with.
Re: NYC Bike Stats
#10> Let me just start by saying that there is no good reason not to wear a helmet when riding a bike in NYC.
One common argument is that drivers have more respect for cyclists without helmets, i.e. they're more afraid of hitting a cyclist without a helmet.
The discussion goes back a long time, this article for instance is 9.5 years old: https://www.scientificamerican.com/article/strange-but-true-...
I guess, most cyclists think it's more likely that they'll be hit by a car, not a pedestrian.
It could also be that some cyclists don't have the money to buy a helmet - or other types of safety gear.