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A reference framework consisting of a set of points, lines, and/or surfaces, and a set of rules, used to define the positions of points in space in either two or three dimensions. This tag also refers to cartographic projections and coordinate system transformations.

5 votes
1 answer
4k views

Calculating Grid Convergence for Lambert Conformal Conic

What is the formula to calculate Grid Convergence angle (angle between true north and grid north) for Lambert Conformal Conic projection for a given location. Searching online, I have been able to fi …
Kanchu's user avatar
  • 201
1 vote
0 answers
655 views

Azimuthal Equidistant Projection - Rotate projection

I am using Azimuthal Equidistant Projection to plot points in a map being drawn in an Android application. The origin is the centre of the map. I have the formulas from here and here. I am getting e …
Kanchu's user avatar
  • 201