World Airports Voronoi (2014) • Hacker News Board

Re: World Airports Voronoi (2014)

#21

Post by harry-wood » Mon, Jun 18, 2018, 1:15 PM UTC

mattlondon wrote: post #20

I cant see Baltra Airport in the Galapagos Islands ( https://goo.gl/maps/x9PW5i4VWMH2 ) - it is "near" the most remote Mataveri Airport on Easter Island and may skew the most remote result to another airport? I guess not all airports are included (e.g there is one I've flown into as a tourist to the antarctic peninsula that is missing ( https://goo.gl/maps/u54LnTDYb8N2 ) Great visualisation though :)

It says "2,980 large and medium airports with scheduled services from OurAirports.": http://ourairports.com/data/

Re: World Airports Voronoi (2014)

#22

Post by M_Bakhtiari » Mon, Jun 18, 2018, 1:25 PM UTC

There are obviously more airports in the world than this. What are the criteria for inclusion in the visualization?

Re: World Airports Voronoi (2014)

#23

Post by NKosmatos » Mon, Jun 18, 2018, 1:25 PM UTC

Nice one, actually all Voronoi diagrams are cool.

If only there was a webpage/software where someone could click/select points on a map (or even better enter coordinates) and a user Voronoi diagram would be created ;-)

Re: World Airports Voronoi (2014)

#24

Post by jschulenklopper » Mon, Jun 18, 2018, 1:28 PM UTC

Demiurge wrote: post #9

Zeebrommer wrote: post #8

There must be a correlation with population density

It doesn't look like it. You can have different size airports serving vastly different volumes. It looks like the spacial distance is first factor, and then municipal boundaries. The boundaries are historical and can be based on population.

You misread the intention of the parent's comment. It's not that population _is_ taken into account (your interpretation), but that is _should be_ taken into account.

Re: World Airports Voronoi (2014)

#25

Post by burfog » Mon, Jun 18, 2018, 1:41 PM UTC

NKosmatos wrote: post #23

Nice one, actually all Voronoi diagrams are cool. If only there was a webpage/software where someone could click/select points on a map (or even better enter coordinates) and a user Voronoi diagram would be created ;-)

Voronoi diagrams of Penrose tilings are extra cool. There are six at the bottom of this page: http://www.josleys.com/show_gallery.php?galid=284

I'd love to see it as real tiles. The nicest looking might be pearly-white granite or quartzite, with pink granite for the pentagons. Adding grey into the mix, I think a floor could be done without same-color adjacent tiles. I wonder where I could buy this.

Re: World Airports Voronoi (2014)

#26

Post by calebegg » Mon, Jun 18, 2018, 1:41 PM UTC

M_Bakhtiari wrote: post #22

There are obviously more airports in the world than this. What are the criteria for inclusion in the visualization?

It's at the very top of the description, just below the globe.

"2,980 large and medium airports with scheduled services from OurAirports."

Re: World Airports Voronoi (2014)

#27

Post by SiempreViernes » Mon, Jun 18, 2018, 1:44 PM UTC

M_Bakhtiari wrote: post #22

There are obviously more airports in the world than this. What are the criteria for inclusion in the visualization?

Inclusion by http://ourairports.com/data/ in the categories "medium" or "large".

> 2,980 large and medium airports with scheduled services from OurAirports.

Re: World Airports Voronoi (2014)

#28

Post by perilunar » Mon, Jun 18, 2018, 1:46 PM UTC

mattlondon wrote: post #20

I cant see Baltra Airport in the Galapagos Islands ( https://goo.gl/maps/x9PW5i4VWMH2 ) - it is "near" the most remote Mataveri Airport on Easter Island and may skew the most remote result to another airport? I guess not all airports are included (e.g there is one I've flown into as a tourist to the antarctic peninsula that is missing ( https://goo.gl/maps/u54LnTDYb8N2 ) Great visualisation though :)

Yeah, he mentions that: "There are in fact airports on Antarctica, but they are not classed as medium or large, and do not have scheduled services according to this dataset."

The list of airports in Antarctica is surprising long, but most of them are ice or snow and probably need to be remade each year. Some are hard to impossible to see on google maps, but many are quite visible.

https://en.wikipedia.org/wiki/List_of_airports_in_Antarctica

Re: World Airports Voronoi (2014)

#29

Post by elicash » Mon, Jun 18, 2018, 1:48 PM UTC

This is my favorite instance of a voronoi diagram: https://imgur.com/a/zjNWL

I actually wrote into the Reese's company to find out what that was happening to their giant cups, and got no reply unfortunately.

Re: World Airports Voronoi (2014)

#30

Post by mumrah » Mon, Jun 18, 2018, 1:53 PM UTC

elicash wrote: post #29

This is my favorite instance of a voronoi diagram: https://imgur.com/a/zjNWL I actually wrote into the Reese's company to find out what that was happening to their giant cups, and got no reply unfortunately.

I would guess they have injectors for the filling at the centers of those cells. A Voronoi edge is equidistant from the two points it bisects, so it kind of makes sense that this would happen naturally if the filling is injected at a constant rate.