On Fri, 15 Jun 2012, Markus Neteler wrote:
probably there is no mathematical definition available. What is your
target projection?
Markus,
-PROJ_INFO-------------------------------------------------
name : Transverse Mercator
proj : tmerc
datum : nad83
ellps : grs80
lat_0 : 34.75
lon_0 : -115.5833333333333
k : 0.9999
x_0 : 200000.00001016
y_0 : 8000000.000010163
no_defs : defined
-PROJ_UNITS------------------------------------------------
unit : US survey foot
units : US survey feet
meters : 0.3048006096012192
Thanks,
Rich