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Virtual representation of a real-world object that is vizualized in a 3-dimensional artificial space.

2 votes

True non-projected 3D grid world modeling

It is true that data in a global 3D cartesian coordinate system will allow you to do distortion-free calculations of 3D distances and angles. And if users are happy with perspective views of the 3D wo …
Martin F's user avatar
  • 9,001
2 votes
Accepted

Geographic coordinate systems on 2D screens

It is possible to work only with geographic (lat-long) coordinates, do all the calculations on a sphere and never project them. However, you are correct: Whenever we see a curved surface (a portion of …
Martin F's user avatar
  • 9,001