A Map Projection. The inverse equations for are computed by iteration.
Let the Angle of the projection plane be . Define
|
(1) |
For proper convergence, let and compute the initial point by checking
|
(2) |
As long as , take and iterate again. The first value for which is then the starting point.
Then compute
|
(3) |
until the change in between evaluations is smaller than the acceptable tolerance. The (inverse) equations are then
given by
© 1996-9 Eric W. Weisstein
1999-05-25