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A new kind of map: it’s about time

blog.mapbox.com

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Re: A new kind of map: it’s about time

#11

Post by qznc »

microcolonel wrote: post #8
qznc wrote: post #6

Earlier quoted context omitted.

This. I was hoping for some weird pictures of distorted maps.

For what it's worth, I think it would be computationally quite hard. You would have to pick a set of points and maybe isomap them from three dimensions (x, y, and time) to two, then find a visually acceptable cage transformation using those points as anchors. You'd have to do this for each query.

The Isochrones [0] mentioned in the article include basically all the necessary information. I guess a capable GPU-shader programmer could easily render the distortion in real time. (Hint Hint Hacker News for a cool weekend project)

[0] https://www.mapbox.com/bites/00156/#10/51.6840/-0.1480

Re: A new kind of map: it’s about time

#12

Post by forrestthewoods »

arafalov wrote: post #9

I would love a distance map that includes public transport travel time. For example, if I live close to metro/subway/train and I want to do really big grocery shopping. It would be interesting to see the nearest grocery that includes those I could reach by jumping on the metro and with minimal total walking. It may be more effective to catch the train to a grocery in a completely different part of town than to walk 3…

I wrote a tool that kinda does that. It shows how far you can travel by different modes of transport, including public transit. It also work with time of day to account for both bus schedules and traffic.

https://blog.forrestthewoods.com/visualizing-commute-times-3...

Re: A new kind of map: it’s about time

#13

Post by roywiggins »

arafalov wrote: post #9

I would love a distance map that includes public transport travel time. For example, if I live close to metro/subway/train and I want to do really big grocery shopping. It would be interesting to see the nearest grocery that includes those I could reach by jumping on the metro and with minimal total walking. It may be more effective to catch the train to a grocery in a completely different part of town than to walk 3…

Not quite, but it will show you an area within X minutes of transit from a given location.

https://www.mapnificent.net

Re: A new kind of map: it’s about time

#15

Post by nemetroid »

qznc wrote: post #11
microcolonel wrote: post #8

Earlier quoted context omitted.

For what it's worth, I think it would be computationally quite hard. You would have to pick a set of points and maybe isomap them from three dimensions (x, y, and time) to two, then find a visually acceptable cage transformation using those points as anchors. You'd have to do this for each query.

The Isochrones [0] mentioned in the article include basically all the necessary information. I guess a capable GPU-shader programmer could easily render the distortion in real time. (Hint Hint Hacker News for a cool weekend project) [0] https://www.mapbox.com/bites/00156/#10/51.6840/-0.1480

The problem isn't in getting the data for the transformation but to figure out which transformation to use. It's not possible to do in the general case, imagine e.g. an infinitely quick circle line. Where do you put the part of the map that's inside the circle?

Re: A new kind of map: it’s about time

#16

Post by toomuchtodo »

qznc wrote: post #11
microcolonel wrote: post #8

Earlier quoted context omitted.

For what it's worth, I think it would be computationally quite hard. You would have to pick a set of points and maybe isomap them from three dimensions (x, y, and time) to two, then find a visually acceptable cage transformation using those points as anchors. You'd have to do this for each query.

The Isochrones [0] mentioned in the article include basically all the necessary information. I guess a capable GPU-shader programmer could easily render the distortion in real time. (Hint Hint Hacker News for a cool weekend project) [0] https://www.mapbox.com/bites/00156/#10/51.6840/-0.1480

> (Hint Hint Hacker News for a cool weekend project)

I would love an HN/GoFundMe or Patreon mashup, where people could take on cool hacks in a thread that readers are willing to support.

I have zero free time at this point in my life, but would be willing to throw some money at folks who do have free time and skills.

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