3 ms·

I used to know a lot more about rendering than I do today, but (forgive me if this sounds stupid) - I wonder if you could add to a gps coordinate area (say 1 sq

I used to know a lot more about rendering than I do today, but (forgive me if this sounds stupid) - I wonder if you could add to a gps coordinate area (say 1 sq. km. to also include that patche's NORMAL from the surface of the globe that you're projecting your map to, and have the 1km tile's image adjusted based on a orthographic view from that tile's NORMAL, so effectively - you're projecting each 1k square more directly from areal imagery? Or is this already considered in modern projection methods?

mikhailfranco 3y ago
This is already mentioned in the other comments, as the latitudinal correction to longitudinal dimension [i.e. use cos(latitude) as a scale for EW distances]. I call this the tangent-plane projection (which hints at your picture), where distances can be simply calculated by 2D Pythagoras in the EW-scaled coordinates. I recently discovered it is more often known as Equirectangular Projection: https://en.wikipedia.org/wiki/Equirectangular_projection https://en.wikipedia.org/wiki/Equirectangular_projection More details at this excellent resource for GIS coordinate geometry: https://www.movable-type.co.uk/scripts/latlong.html https://www.movable-type.co.uk/scripts/latlong.html