what does "density weighted by population" mean?
    it is the density that the median person lives at, which is the density you should probably
    care about if you care about how people live and behave. people care about people. so should you.

why can't i use the map zoomed out on my phone?
    more zoomed out levels use a lot of memory. if you ask for the desktop site in your browser you'll
    be able to zoom out more but your phone will probably kill the page. especially on safari/ios.

what does "density weighted by populated land area" mean?
    it's more like the boring normal measure of density of population/land area. but it excludes
    totally unpopulated areas of land because it was like half a line of code less to do that
    and people don't live in the sea.

when i move around the map why is it empty?
    i coded the streaming part pretty lazily. just stop moving the map a second and it will load in.

i want it to be faster when the radius is big
    use a better computer like a desktop

why is only europe covered?
    i need a better computer or the time to think about how to do it without needing ~100GB of RAM
    to convert that global population layer tiff to h3. i started work on it here
    https://github.com/bovine3dom/grid2h3 but good luck deciphering it

something else is broken and i want to complain
    file an issue https://github.com/bovine3dom/population-around-a-tile

how does it work?
    nerd. code at https://github.com/bovine3dom/population-around-a-tile

        - jrc population 1km (2018 coz that version includes the uk) grid reprojected to h3 with code
          that i scribbled down in https://github.com/bovine3dom/grid2h3

        - that repo splits the data into a hive style directory structure so it can be streamed to
          the browser without needing anything more than a dumb web server

        - then deck.gl is used for visualisation with a maplibre map and a nice tileset from maptiler

        - arquero is used to calculate the statistics on the selected tiles

        - shoelace is used for the UI

why did you do this?
    1) i like hexagons
    2) i think people generally talk about population density in a pretty silly way
        (yes i am talking about the "the uk is full" people when we have pretty low population density)
    3) https://www.tomforth.co.uk/circlepopulations/ reminded me that toys are better than graphs for changing minds