The most noticeable visual distortion of a map projection at street level isn’t actually size and area, but angle. While Mercator and Web Mercator distort both size and area, angle remains the same. But projections like Equal Earth distort angle to keep area and size the same.
In practice, what this means is that with Web Mercator, you will see an intersection as 2 perpendicular lines crossing each other, leaving four 90° angles. But with Equal Earth, depending on the location, all those angles will be different, and the lines won’t be perfectly perpendicular.
(of course, Web Mercator also has this issue, because it uses a perfect sphere instead of a spheroid for the projection, but the very slight difference isn’t really noticeable, and using a spheroid is more compute-heavy)
Map navigation and satellite imagery are very specific cases where a Mercator or Mercator style projection are better suited, mainly because of the preservation of the angles. However, for any other case, Equal Earth is a very good projection, and I agree it should be used over Mercator. Especially in education.
But at the scale of streets and building surely the type of map projections is such a mute point the earth might as well be flat.
Not actually, it depends on the projection.
The most noticeable visual distortion of a map projection at street level isn’t actually size and area, but angle. While Mercator and Web Mercator distort both size and area, angle remains the same. But projections like Equal Earth distort angle to keep area and size the same.
In practice, what this means is that with Web Mercator, you will see an intersection as 2 perpendicular lines crossing each other, leaving four 90° angles. But with Equal Earth, depending on the location, all those angles will be different, and the lines won’t be perfectly perpendicular.
(of course, Web Mercator also has this issue, because it uses a perfect sphere instead of a spheroid for the projection, but the very slight difference isn’t really noticeable, and using a spheroid is more compute-heavy)
Map navigation and satellite imagery are very specific cases where a Mercator or Mercator style projection are better suited, mainly because of the preservation of the angles. However, for any other case, Equal Earth is a very good projection, and I agree it should be used over Mercator. Especially in education.
*moot point
I knew there was something amiss 😄
Well, your initial comment made you quite the hute.