[Proj] Extent of mercator

Dean C. Mikkelsen dcmikkelsen at shaw.ca
Tue Aug 9 17:32:26 EDT 2005

Hi there.

Generally the same rules apply for the Mercator Projection as for the

The largest distortion appears at the poles. To avoid the most
distortions, avoid using Latitudes greater than 60 degrees North or
South. At these latitudes, most large government agencies and countries
turn to Conic Projections.


Dean C. Mikkelsen, B.Sc., P.Eng.
Terra ETL Ltd - Geodesy & GIS
Phone: 604-929-8630
E-mail: dcmikkelsen at shaw.ca

-----Original Message-----
From: proj-bounces at lists.maptools.org
[mailto:proj-bounces at lists.maptools.org] On Behalf Of Stefan Biegger
Sent: Tuesday, August 09, 2005 9:36 AM
To: proj at lists.maptools.org
Subject: [Proj] Extent of mercator

Hi everybody

does somebody knows if there's a well defined limit of the extent when
using the mercator projection? For UTM, there's something like 'Latitude
from 84S to 80N'

Thanks a lot

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