Extracted at 2009-07-07.
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predef::
Geography
Geography.Position

Method Geography.Position()->set_ellipsoid()


Method set_ellipsoid

int(0..1) set_ellipsoid(string name)
int(0..1) set_ellipsoid(float equatorial_radius, float polar_radius)

Description

Sets the equatorial and polar radius to the provided values. A name can also be provided, in which case the radius will be looked up in the ellipsoid mapping. The function returns 1 upon success, 0 on failure.

"Airy 1830"
"ATS77"
"Australian National"
"Bessel 1841"
"Bessel 1841 Namibia"
"Clarke 1866"
"Clarke 1880"
"Everest"
"Everest 1830"
"Everest 1848"
"Everest 1856"
"Everest 1869"
"Everest Pakistan"
"Fisher 1960"
"Fisher 1968"
"G R S 1967"
"G R S 1975"
"G R S 1980"
"Helmert 1906"
"Hough 1956"
"Indonesian 1974"
"Krassovsky 1940"
"Mercury"
"Modified Airy"
"Modified Fisher 1960"
"New International 1967"
"SGS 85"
"South American 1969"
"Sphere"
"WGS 60"
"WGS 66"
"WGS 72"
"WGS 84"

Note

The longitude and lattitude are not converted to the new ellipsoid.