[Proj] Transverse Mercator algorithm
ckarney at sarnoff.com
Thu Sep 4 23:38:59 EDT 2008
Gerald I. Evenden wrote:
> On Thursday 04 September 2008 3:58:12 pm Charles Karney wrote:
>> Charles Karney wrote:
>>> It'll take a day or so to make my macsyma code for the exact transverse
>>> Mercator transformation presentable.
> WARNING: anyone doing test with this script needs to know that the scale
> factor is also set to 0.9996. The ellipsoid was reference OK but not knowing
> the scale factor had be set had me running around in circles for a minute.
Well, I did say the documentation was meager! Use
to set the major radius, inverse flattening, and central scale factor.
The default is
setparams(6378137b0, 298.257223563b0, 0.9996b0)$
appropriate for UTM applications. (But note that no false easting or
false northing is applied.)
Charles Karney <ckarney at sarnoff.com>
Sarnoff Corporation, Princeton, NJ 08543-5300
Tel: +1 609 734 2312
Fax: +1 609 734 2662
More information about the Proj