[OSRS-PROJ] Schreiber Transverse Mercator
gerald.evenden at verizon.net
Fri Mar 26 10:39:35 EST 2004
After shelving the Roussilhe for the moment I shifted back to trying to
information on the even more elusive Schreiber Transverse Mercator
While googling thought a desperate selection choice and 8,000 results I
upon GPSmanhttp://www.ncc.up.pt/~mig/gpsman.html wherein lay a tcl
procedure to "Schreiber Stereographic."
This turned out to be the same as libproj4's +sterea (Alternate
projection which is a double conversion through the Gauss sphere. I
not pin down the creators source for the name but it seems to indicate
Schreiber had a thing for the double conversion and may have applied it
the Transverse Mercator problem as well. Snyder in "Flattening the
describes the Schreiber as a double conversion.
The next release of libproj4 will contain the "stmerc" projection
called the Schreiber Transverse Mercator. As Snyder indicated, the
error is not zero along the central meridian but from what I find,
rather bizarre path.
Jerry and the low riders: Daisy Mae and Joshua
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