World Capitals Voronoi

https://www.jasondavies.com/maps/voronoi/capitals/

by vincnetas • 1 month ago

133 70 1 month ago

jasondavies.com

vincnetas• 1 month ago

If country boundaries were Voronoi diagrams with respect to their capitals.

brunellus• 1 month ago

I really enjoyed this.

syats• 1 month ago

Great work.

jezzamon• 1 month ago

I want to see one a diagram which includes the oceans too

vulcan01• 1 month ago

Huh, Canada seems roughly intact (except for BC).

wk_end• 1 month ago

BC's intact too, if I'm reading this correctly. We lose some far north to Iceland and the very southern tip of Ontario to the US, and that seems to be it as far as I can tell. And as a trade we get New England, a good chunk of Washington, and the northern Plains and a bit of the Midwest. Not bad, really!

bwestergard• 1 month ago

Seems right, ship it.

forthwall• 1 month ago

Interesting, if a country has multiple capitals, it gets split even more!

jasondavies6• 1 month ago

I've updated the map to use only one de facto capital city per region.

martinclayton• 1 month ago

Dublin knabs a decent chunk of Great Britain, Copenhagen gets southern Sweden. Seems fair.

raverbashing2• 1 month ago

If they added Cardiff and Edinburgh I think the map would be more realistic

OisinMoran• 1 month ago

Join the Celtic Union, don't be shy!

pimlottc• 1 month ago

I would love to see some stats with this. What countries gain/loss the most? Which countries are the last changed? What areas are the now the most countries away from their original country?

jcranmer• 1 month ago

Eyeballing the map:

For largest absolute net gain of land area, I guess Mongolia wins the cake, getting a very large slice of Siberia while losing almost no land. For a percentage net gain of land area, maybe one of the European microstates, or East Timor.

Largest absolute net loss of land area is Russia for sure. Largest percent loss is... probably Russia? Again, losing Siberia is a large fraction of its land, and nobody else seems to be so screwed by the distance.

Excluding overseas territories, there's three borders between Yakutia-cum-Japan and its current capital, Moscow, and another case of that in the far western reaches of Brazil. If you include overseas territories, well, French Polynesia is currently almost literally antipodal from Paris, and I don't really know how you would count 'most countries away' in that case, but you can't really get further than that.

radpanda• 1 month ago

I dunno, New Zealand getting a big chunk of Antarctica is a pretty big percentage gain too.

Conscat• 1 month ago

I find it very funny to imagine Keralam and Tamil Nadu part of Sri Lanka.

rv1994• 1 month ago

Although ethnically they're closer to Sri Lanka than North India

Georgelemental• 1 month ago

Hmm, looks like it models capital cities as a single point, and therefore assigns much more territory to Vatican City than would a model that took into account Rome's city boundaries

bensyverson• 1 month ago

Yes, this is the point, right?

canyp2• 1 month ago

It is the point, precisely.

Liquid_Fire• 1 month ago

It says "determined by the closest capital city". The only area where Vatican City is closer than (some part of) Rome is within Vatican City.

Svoka4• 1 month ago

Ukraine's capital is misspelled "Kiev". Should be "Kyiv"

falcor84• 1 month ago

Just for a bit of context, this site is from over a decade ago, at which point almost everyone outside of Ukraine used the old spelling of Kiev, despite the official transliteration change to Kyiv from 1995 [0]. Ukraine ended up having to run the KyivNotKiev [1] campaign to get other countries to adopt the new spelling, which mostly gradually happened over the last few years. But I think it's a bit much to expect every resource out there to retroactively update their spelling.

[0] https://en.wikipedia.org/wiki/Names_of_Kyiv

[1] https://en.wikipedia.org/wiki/KyivNotKiev

Svoka4• 1 month ago

Thank you for westsplaining me my history.

It was always Kyiv. Your (personal or collective) ignorance and/or obsession over moscowite imperiealists doesn't change the name of my city.

jasondavies6• 1 month ago

Fixed!

Svoka4• 1 month ago

Thanks. Only correct response.

4gotunameagain2• 1 month ago

Kiev is a perfectly valid English spelling.

Svoka4• 1 month ago

Love when people try to explain me how to call my city.

NathanielBaking• 1 month ago

Madison, Canada. Now I just need to sell this to the Canadians.

mattoxic• 1 month ago

Taipei claiming a big chunk of the PRC. Probably go down as well as Ottawa and Mexico City claiming big chunks of the USA

yellowapple• 1 month ago

Funny enough, Mexico's borders on this globe ain't far off from where they were before the Mexican-American War.

nsavage• 1 month ago

The bad news is that we lose Windsor in this trade. The good news is that we pick up Seattle and Minneapolis.

orthoxerox• 1 month ago

Well, it has claims on all of China in reality, being the rump state.

pithon• 1 month ago

The framerate and latency on this visualization is absolute magic. Hover the mouse around over the sphere: https://www.jasondavies.com/maps/voronoi/

canyp2• 1 month ago

Indeed. It is rare to encounter a webgl/gpu visualization that doesn't rev up the fans at 100% while sitting idle, let alone to have this low latency handling input. Virtually all web demos I have seen run terribly because literally 0 attention is paid to actual rendering. The other day somebody submitted one here and admitted they didn't know backface culling was a thing. They also almost universally have no sort of frame pacing.

sheept• 1 month ago

It feels quite choppy on mobile, but I think it could be fixed by adding touch-action: none

jasondavies6• 1 month ago

Fixed!

chrismorgan• 1 month ago

I find zooming on this world capitals one to be quite slow for some reason, mostly well below 10fps, and it’s rendering all frames rather than skipping to keep up (the wrong decision, I reckon). Panning is excellent; and zooming is fine on /maps/voronoi/, which has only a dozen or so points, which I guess must be few enough not to slow it down. I’m curious what’s going on, but not enough to delve into the code myself.

Actually, even /maps/voronoi/ lags if you zoom in really far, and in a way that can break the scroll capture—I presume the code is non-passively watching scroll events and calling preventDefault(), but once it’s lagging hard enough the browser takes matters into its own hands and says you didn’t act fast enough.

thadk• 1 month ago

2014 https://web.archive.org/web/20140515004053/https://www.jason...

cperciva2• 1 month ago

It would be interesting to see a map which was not minimizing [distance to capital] but instead minimized [distance to capital]/sqrt([national population]). The latter would be more robust against Sybil attacks.

mckn1ght• 1 month ago

I was wondering what kind of metric could be used to visualize a nation’s ability to project power. Maybe some ratio involving the furthest distance from the capital city to the nation’s border?

I’m curious why the sqrt of the population in the denominator?

MarkusQ• 1 month ago

I think that's supposed to be read as "or"? (I momentarily had the same confusion myself.)

cperciva2• 1 month ago

Square root of the population is because that's what it takes to normalize large vs small countries. Imagine slicing a country into quarters; each slice has a quarter of the population and half the radius.

mlsu• 1 month ago

Now the corollary. For each country, given existing borders, place the capital directly in the geographic area centroid? Population centroid? Which capitals move most?

wood_spirit• 1 month ago

Related post from same site earlier this week https://news.ycombinator.com/item?id=48385457

T_S_• 1 month ago

New Risk board released

polotics• 1 month ago

the choice of which city makes it into a dot seems very arbitrary, just for my corner of the woods, I see Genova and Lyons are omitted even they they are larger than their dot-neighbours on this map...

yiyus• 1 month ago

It's not arbitrary. They are the capitals. Capitals are not necessarily the largest cities.

raverbashing2• 1 month ago

The funny thing about this is that it's almost realistic

But in fact of course geography plays a big part

That "non-existent" country between France and Spain would actually be the center of Occitan/Langues d'Oc. (Well, it's actually the location of Andorra)

It is also in the middle of the Pyrenees so of course that is going to push population out to the sides

Same thing for where the areas "bleed over" water regions or some rivers

legostormtroopr• 1 month ago

Speedrun: Starting World War III, any%

the_origami_fox• 1 month ago

South Africa is split into 4 segments. Johannesburg is not a capital. Otherwise South Africa has 3 capital cities - administrative (Pretoria), legislative (Cape Town) and judicial (Bloemfontein) - but Pretoria is informally considered the "main" capital.

rubenvanwyk• 1 month ago

Came here to say this.

jasondavies6• 1 month ago

Fixed!

keybored• 1 month ago

I think Montevideo’s slice of Antarctica is the craziest.

pcrh2• 1 month ago

Las Malvinas son Uruguayo.

gnoll_of_gozag• 1 month ago

would be interesting to see one that takes into account things like railroads or terrain ruggedness

pcrh2• 1 month ago

The Vatican is surrounded on all sides by Rome. It is on the boundary of Municipio I (historical center) and Municipio XIII (Aurelia), however. So is Municipio I considered the "actual" capital of Italy?

Also, the Vatican is the Holy See (as in seat), not Holy Sea (as in water)...

jasondavies6• 1 month ago

Excellent point. I've removed Vatican City from the map for now, as it is entirely enclosed by another capital city (Rome) and so its Voronoi cell will be tiny.

maybewhenthesun• 1 month ago

Very nice.

I guess most dutchies would disagree with the decision to pick De Hague as the Main Capital, though :-)

While all power is in De Hague , Amsterdam definitely is the Capital. De Hague is for complaining about, Amsterdam is for celebrating.

jasondavies6• 1 month ago

Fixed. It was originally Amsterdam, but I was experimenting with resolving ambiguous capitals by using the de facto seat of government, based on other feedback here (e.g. South Africa originally had multiple capitals). I've switched back to the more familiar atlas capital in ambiguous cases.

Beretta_Vexee• 1 month ago

Perhaps you should limit it to capital cities or states with a certain population size. Including all the European microstates does not seem appropriate to me; Andorra, Monaco, San Marino and the Vatican have very varying degrees of independence and geopolitical significance.

zamadatix3• 1 month ago

Regardless of how one selects states there will always be comments saying it was done wrong. Don't fall into this trap, just stick with one of the UN lists as has already been done here (looks like members+recognized observer states) and accept not everyone can be perfectly pleased with what is considered a state or not.

Interactive data filters would definitely be fun on its own account though. E.g. the population slider or by having a button making it the largest cities above x population instead of countries/capitals or so on with centers of states. It looks like there are several different maps on this site, such things may make it more a single experience with more overall value than the separated parts. Still cool as it is though :) just one possibility to go further with it.

spprashant• 1 month ago

It took me this map to realize the capital of Sri Lanka is Sri Jayawardenepura Kotte, and not Colombo as I thought for over 30 years.

Always interesting to find capital cities which are in fact not the most famous cities from that country. Makes for great trivia questions.

THX1137• 1 month ago

Not quite - it's somewhat like South Africa in that certain institutions are in Colombo and others in Kotte (specifically the legislature is in Kotte). In addition, Kotte and Colombo are nearly adjacent.

zamadatix3• 1 month ago

@jasondavies, if you're still taking small enhancement requests - a fullscreen button (for the visualization, not the whole page) would be fabulous

dimview• 1 month ago

Looks like it uses seven colors (including bodies of water). Can it be done with fewer colors? The four color theorem does not quite apply, as all bodies of water have to be the same color.

zamadatix3• 1 month ago

I don't know who would be more upset - the UK for losing so much to Ireland or France for losing a little bit to the UK.

f137• 1 month ago

Suppose right before this re-bordering takes place, the countries are given the chance to change the capitals' location. Suppose further that they all do it to maximize the area after re-bordering.

I wonder how much the result will differ?

CGMthrowaway• 1 month ago

Well, this was a creative way of solving Iran's blockade of the Strait of Hormuz!

World Capitals Voronoi

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