[boost] geodetic library

Subject: [boost] geodetic library
From: DE (satan66613_at_[hidden])
Date: 2009-08-27 15:55:08

is there a need for subj?

i implemented very accurate direct and inverse geodetic problem
routines (as well as geocentric (X, Y, Z) to geodetic (B, L, H) conversion)
i used bessel's method to derive the formulas
6 iterations for both direct and inverse routines is enough to
converge to full double precision (16 digits)
however the formulas themselves provide 9 significant digits
that is 1cm accuracy regardless of range (i.e. range = 1m..20000km)
to get acceptable accuracy, say, 2 iterations is enough (or even 1)

however there are several other aspects uncovered (area and perimeter,
projections, etc.)

--
Pavel