[OSRS-PROJ] Date: Wed, 21 May 2003 12:50:35 +0200

[Gerald I. Evenden]

In relation to PROJ itself and not cs2cs, UTM requires the "+south" flag
for southern hemisphere zones.  This sets the false northing to
10,000,000m.

Also, when referring to a spherical earth just use +a= or +R= and
not any ellipsoid values (like +b=) even though they reduce to
a spherical earth.

On Wed, 2003-05-21 at 06:44, Torfinn Rasmussen wrote:
> 
> Hi everyone,
> 
> Just started using proj.
> I want to convert from lat/long coordinates in a spherical datum to utm
> coordinates in WGS84. I use:
> 
> cs2cs -f %.7lf +proj=latlong +a=6371008.7714 +b=6371008.7714 +towgs84=0,0,0
> \
>   +no_defs +to +proj=utm +zone=30 +datum=WGS84 >
> 
> This apparently gives me the right coordinates but on the southern
> hemisphere..! Anyone have any ideas why??
> 
> 
> Torfinn Rasmussen
> 
> 
> ------------------------------------------------------
> Geophysicist
> Volcanic Basin Petroleum Research AS
> Forskningsparken, Gaustadalleen 21, 0349 Oslo, Norway
> Phone: +47-2295 8558, Cell:  +47-4020 2715
> Email: torfinn at vbpr.no, http://www.vbpr.no
> 
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