Equirectangular projection: Difference between revisions

Revision as of 12:49, 31 July 2023

Revision as of 17:56, 9 August 2023

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While a projection with equally spaced parallels is possible for an ellipsoidal model, it would no longer be equidistant because the distance between parallels on an ellipsoid is not constant. More complex formulae can be used to create an equidistant map whose parallels reflect the true spacing.

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===Reverse===

:<math>\begin{align}

\lambda &= \frac{x} {R \cos \varphi_1} + \lambda_0\\

\varphi &= \frac{y} {R} + \varphi_0

\end{align}</math>

===Alternative names===