[Qgis-user] ECW imagery in Southern Hemisphere

[Agustin Lobo]

There is a problem of nomenclature here:
In Catalonia we are on 31T, but the T is never used (don't
think it's even required for the reprojection), thus
31 N (with N meaning Norther hemisphere) is often used to make
reference to our projection. Which
is different than zone 31N, where the N means the latitude zone.

Note that the page you mention states (the * are mine):
"it is necessary to additionally state the UTM longitudinal zone and 
*either* the hemisphere or latitudinal zone to define the location 
uniquely world-wide"


Agus


Craig Leat wrote:
> Micha Silver wrote:
>> I need to assist some agricultural projects using QGIS, and located in
>> the Southern Hemisphere. They have a large set of ECW imagery which
>> displays "up side down". It looks as if the images are rotated around
>> their northern edge.  The northern edge is at the bottom of the map, and
>> the southern edge at the top. Hope I've explained myself...
>> The imagery has no CRS in the metadata data but they are located in
>> UTM40S. The same images in Arcview display correctly...
>>
>> Any ideas how to overcome this would be greatly appreciated.
> 
> UTM40S lies in the northern hemisphere covering part of Turkmenistan
> and Iran [1], but your project lies in the southern hemisphere.
> Possibly you have the incorrect UTM zone?
> 
> Craig
> 
> [1] http://www.dmap.co.uk/utmworld.htm
> _______________________________________________
> Qgis-user mailing list
> Qgis-user at lists.osgeo.org
> http://lists.osgeo.org/mailman/listinfo/qgis-user
>