Conic Equidistant Projection
eqco
A map projection with transformation equations
x = rhosintheta
(1)
y = rho_0-rhocostheta,
(2)
where
rho = (G-phi)
(3)
theta = n(lambda-lambda_0)
(4)
rho_0 = (G-phi_0)
(5)
G = [画像:(cosphi_1)/n+phi_1]
(6)
n = [画像:(cosphi_1-cosphi_2)/(phi_2-phi_1).]
(7)
The inverse formulas are given by
phi = G-rho
(8)
lambda = [画像:lambda_0+theta/n,]
(9)
where
rho = sgn(n)sqrt(x^2+(rho_0-y)^2)
(10)
theta = [画像:tan^(-1)(x/(rho_0-y)).]
(11)
See also
Equidistant ProjectionExplore with Wolfram|Alpha
WolframAlpha
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Cite this as:
Weisstein, Eric W. "Conic Equidistant Projection." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/ConicEquidistantProjection.html