[Qgis-user] [OT] UTM mpas stretching over sveral zones

[Alex Mandel]

On 10/06/2010 08:24 AM, Timmie wrote:
> Hello,
> just a quick hint required:
> 
> If you have to prepare a map that contains data stretching over several UTM
> zones (e.g. a large country), what projection do you chose for country-wide data
> sets?
> 
> I think splitting such data in smaller chunks for the respecive zones would not
> be too practical.
> 
> Thanks for your hints,
> Timmie
> 

The short answer is not UTM. The long answer is that it depends on how
big of and an area and how close to the poles it is. Next, do you want
to minimize distortion of distance, direction, shape or area.

Based on that you pick a good projection or make one by picking the
projection type and centering it over your place (ie Albers Conformal
Conic, Albers Equidistant, Spherical Mercator etc.)

Enjoy,
Alex