from Hacker News

How dense is your city?

by epivosism on 3/3/24, 4:12 PM with 68 comments

  • by vinay427 on 3/4/24, 12:36 AM

    For those who liked this, I frequently come back to this visual which displays the distribution within a city in an arguably more visually appealing format:

    https://www.vox.com/2015/1/2/7480993/population-density-visu...

    It helps explain the low-density feel that a city like London has compared to most large non-European cities.

    The original source is the third panel here: https://issuu.com/lsecities/docs/hongkong2011newspaper/9

  • by sasja on 3/4/24, 1:55 AM

    Love this! Fyi I noticed Kaohsiung was listed incorrectly as Kaohsiung (China) instead of Kaohsiung (Taiwan). Strange as Taipei was listed correctly as Taipei (Taiwan).
  • by timcameron on 3/4/24, 12:19 AM

  • by Bellspringsteen on 3/4/24, 12:39 AM

    Interesting, NYC vs Tokyo. NYC is winning up until 20km. We need higher density queens, Brooklyn, Staten Island and Jersey.

    I don't think this takes into account water around cities. For NYC harbour south of downtown pull us down?

  • by epivosism on 3/3/24, 4:19 PM

    This is really great. I want to review this for everywhere I've been, because the variation in how gov'ts do statistics is hiding so much of what's actually going on there.
  • by user_7832 on 3/4/24, 2:11 AM

    It’s really helpful to have such a visualisation tool. I’ve felt Mumbai as being quite dense (partially because of the sea around it), and throwing a few “most dense cities” like Dhaka/Manila/Tokyo/Jakarta so far still results in Mumbai having the highest cumulative density values (made much more explicit when excluding large water bodies).

    Question/challenge: can anyone find any other city with a greater density? Dhaka is close but has a lower peak and tapers off faster.

  • by wolverine876 on 3/4/24, 4:28 AM

    Note that the default graph is 'weighted density', to show you "how dense an area feels for the typical person who lives there." I didn't see where it says how it's calculated.

    You can change it to other measurements, including straight density.

  • by mjamesaustin on 3/4/24, 5:27 AM

    I love this project, but I find some of the UI decisions baffling.

    For instance, as I add cities to my comparison, the colors of the cities I already have in the chart keep changing. Did anyone bother testing it, because that led to some serious confusion?

  • by BenFranklin100 on 3/4/24, 5:07 AM

    A question I’ve often wondered: how is density measured? Yes, I get it’s the total number of people per square mile, but how does work in detail? Do we count people if they only have their residential home there? If so, it means commercial buildings detracts toward this number. This tilts high density ratings towards residential areas like Somerville MA, which has no downtown to speak of, fewer public parks, and lacking in amenities. What it does have is lots and lots of run-down triple decker residential housing far as the eye can see. The city looks like a low-rent suburb rather than one of the densest cities in New England.
  • by sacado2 on 3/4/24, 2:43 PM

    "0 people live within 5 km of Warsaw." (actual value is close to 2 millions).

    "80.000 people live within 0 km of Paris." (ditto, 2 millions live there).

    There are many other cities where the numbers are absurdly wrong. Don't take this tool too seriously, if at all.

  • by forthwall on 3/4/24, 2:09 AM

    Interesting how San Francisco has almost the same density as NYC when you get to 2km. I wonder if this has to do with density of old neighborhoods surrounding fidi out-densitying most hoods in nyc
  • by hughdbrown on 3/4/24, 8:35 AM

    According to this site, ever city in Canada is more densely populated than Toronto. It says 10 000 people live within 18 km of Toronto versus 1.5 million for Vancouver.
  • by sho on 3/4/24, 6:40 AM

    It would be awesome to write/read the selected cities into/from the URL so selections could be shared easily.
  • by justoreply on 3/4/24, 8:23 AM

    I'm always getting this error message

       Disconnected from the server.
       Reload