Lambert's equal area projection | R Documentation |
It calculates the Lambert's equal area projection.
lambert(y)
y |
A two column matrix with the data. The first column is the altitude and the second is the longitude. |
The spherical data are first rotated so that their mean direction is the north pole and then are projectedt on the plane tagent to the sphere at the north pole.
A two-column matrix with the projected points.
Michail Tsagris.
R implementation and documentation: Michail Tsagris mtsagris@uoc.gr and Giorgos Athineou <gioathineou@gmail.com>.
Kent, John T. (1982). The Fisher-Bingham distribution on the sphere. Journal of the Royal Statistical Society. Series B (Methodological) 44(1):71-80.
euclid, lambert.inv
x <- rvmf(100, rnorm(3), 20)
x <- euclid.inv(x)
a <- lambert(x)
plot(a)
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