4 ms·

Very cool. But I was surprised to see he chose Mercator. See: https://xkcd.com/977/ https://xkcd.com/977/

by xt 11y ago

zokier 11y ago
I thought that too, but on the other hand it is not readily apparent where you'd get a good non-mercator map raster.
- imaginenore 11y ago
  You can just generate one from OpenStreetMaps
  - maxerickson 11y ago
    How would you approach it? Setting up a renderer with global coverage isn't really a trivial task. It is straightforward, and there are reasonable guides, like https://switch2osm.org/ https://switch2osm.org/ , but the planet database is just a big database to work with. (I think I would take advantage of Mapbox's free plan, which allows for 1 custom stylesheet and enough usage to get the image together. I guess there are lots of people who would be happy to render a stylesheet (especially if a modest fee is involved), but I'm not sure how someone on the street figures that out and gets in contact with them)
    - imaginenore 11y ago
      http://wiki.openstreetmap.org/wiki/Rendering http://wiki.openstreetmap.org/wiki/Rendering
      - maxerickson 11y ago
        Yes, I setup a postgres instance a few weeks ago, so that I could render the local area with nik4.py. Lucky for me I already had mapnik and node installed and working, so getting CartoCSS and nik4.py running wasn't a big deal. I was wondering if you had a specific setup in mind when you said 'just generate', as I did not find the process to be particularly trivial, even for a smaller region (and I do have experience messing around with arcane syntax and command lines).
castell 11y ago
I thought that too. http://en.wikipedia.org/wiki/Mercator_projection http://en.wikipedia.org/wiki/Mercator_projection Which map projections would you choose? A difficult decision: http://en.wikipedia.org/wiki/List_of_map_projections http://en.wikipedia.org/wiki/List_of_map_projections
- anc84 11y ago
  Robinson or Winkel-tripel like National Geographic does.
  - coldpie 11y ago
    Hammer retroazimuthal, back hemisphere. Which is, coincidentally, also my favorite skateboarding move.
    - HCIdivision17 11y ago
      This is really cool looking, and I have no idea what you'd use it for. And this is just the neatest thing to play with: https://www.jasondavies.com/maps/hammer-retroazimuthal/ https://www.jasondavies.com/maps/hammer-retroazimuthal/
      - fennecfoxen 11y ago
        "As a retroazimuthal projection, azimuths (directions) are correct from any point to the designated center point." (-- Wikipedia, which knows everything and is never wrong.) It looks like one retroazimuthal variant (the Craig retroazimuthal) is sometimes called the "Mecca projection", so you know which way to kneel at sundown if you're into that sort of thing.
    - fennecfoxen 11y ago
      Okay, hipster. Transverse Mercator, south-oriented. https://trac.osgeo.org/proj/wiki/TMSO https://trac.osgeo.org/proj/wiki/TMSO
- sesqu 11y ago
kaeluka 11y ago
https://www.youtube.com/watch?v=vVX-PrBRtTY https://www.youtube.com/watch?v=vVX-PrBRtTY

Very cool. But I was surprised to see he chose Mercator. See: https://xkcd.com/977/ https://xkcd.com/977/

by xt 11y ago

Very cool. But I was surprised to see he chose Mercator. See: https://xkcd.com/977/ https://xkcd.com/977/

zokier 11y ago

I thought that too, but on the other hand it is not readily apparent where you'd get a good non-mercator map raster.

imaginenore 11y ago
You can just generate one from OpenStreetMaps
- maxerickson 11y ago
  How would you approach it? Setting up a renderer with global coverage isn't really a trivial task. It is straightforward, and there are reasonable guides, like https://switch2osm.org/ https://switch2osm.org/ , but the planet database is just a big database to work with. (I think I would take advantage of Mapbox's free plan, which allows for 1 custom stylesheet and enough usage to get the image together. I guess there are lots of people who would be happy to render a stylesheet (especially if a modest fee is involved), but I'm not sure how someone on the street figures that out and gets in contact with them)
  - imaginenore 11y ago
    http://wiki.openstreetmap.org/wiki/Rendering http://wiki.openstreetmap.org/wiki/Rendering
    - maxerickson 11y ago
      Yes, I setup a postgres instance a few weeks ago, so that I could render the local area with nik4.py. Lucky for me I already had mapnik and node installed and working, so getting CartoCSS and nik4.py running wasn't a big deal. I was wondering if you had a specific setup in mind when you said 'just generate', as I did not find the process to be particularly trivial, even for a smaller region (and I do have experience messing around with arcane syntax and command lines).

castell 11y ago

I thought that too. http://en.wikipedia.org/wiki/Mercator_projection http://en.wikipedia.org/wiki/Mercator_projection Which map projections would you choose? A difficult decision: http://en.wikipedia.org/wiki/List_of_map_projections http://en.wikipedia.org/wiki/List_of_map_projections

anc84 11y ago
Robinson or Winkel-tripel like National Geographic does.
- coldpie 11y ago
  Hammer retroazimuthal, back hemisphere. Which is, coincidentally, also my favorite skateboarding move.
  - HCIdivision17 11y ago
    This is really cool looking, and I have no idea what you'd use it for. And this is just the neatest thing to play with: https://www.jasondavies.com/maps/hammer-retroazimuthal/ https://www.jasondavies.com/maps/hammer-retroazimuthal/
    - fennecfoxen 11y ago
      "As a retroazimuthal projection, azimuths (directions) are correct from any point to the designated center point." (-- Wikipedia, which knows everything and is never wrong.) It looks like one retroazimuthal variant (the Craig retroazimuthal) is sometimes called the "Mecca projection", so you know which way to kneel at sundown if you're into that sort of thing.
  - fennecfoxen 11y ago
    Okay, hipster. Transverse Mercator, south-oriented. https://trac.osgeo.org/proj/wiki/TMSO https://trac.osgeo.org/proj/wiki/TMSO
sesqu 11y ago

kaeluka 11y ago

https://www.youtube.com/watch?v=vVX-PrBRtTY https://www.youtube.com/watch?v=vVX-PrBRtTY