[gdal-dev] Re: Do we have to know UTM zone a priori to convert to UTM from lat/lon

[Etienne Tourigny]

Well GDAL has the necessary infrastructure for (almost) anyone to do
it themselves.
This type of application is typically handled by python scripts, feel
free to submit your own when it is ready. It would make a nice
addition to the python samples in my opinion.

EPSG zones are defined for longitude zones, both north and south (not
in 8-degree zones), so in GDAL you only need to find the longitudinal
zone and define if it is north or south.

e.g. from spatialreference.org
EPSG:32718 -> WGS 84 / UTM zone 18S
EPSG:32618 -> WGS 84 / UTM zone 18N

Etienne

On Mon, Sep 12, 2011 at 7:55 PM, Matt Funk <matze999 at gmail.com> wrote:
> On 9/12/2011 4:07 PM, Tim Osborn wrote:
>> I should have said that the above equation is valid for longitudes greater
>> than or equal to -180.0 and less than +180.0.
> I assume it is the same to determine the latitude zone (using 8
> degrees). The one thing though are the exceptions (even though I don't
> intend to do any computations in those zones) ... . Is it correct then
> to assume that gdal has no capabilities to return the zone based on a
> given lat/lon pair? As easy as the code you provided is, it seems that
> this capability (and the zone exception handling) would be included in
> gdal ... .
>
> either way, thanks
> matt
>
>> --
>> View this message in context: http://osgeo-org.1803224.n2.nabble.com/gdal-dev-Do-we-have-to-know-UTM-zone-a-priori-to-convert-to-UTM-from-lat-lon-tp6785362p6785446.html
>> Sent from the GDAL - Dev mailing list archive at Nabble.com.
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