[OpenLayers-Users] reprojection issue

[Thomas Maschler]

Hi Jan, hi Nicholas,

Tunisia is at the Mediterranean sea, which is clearly in the northern 
hemisphere. 32N should be right. The S on the images is representing 
something else in the grid.

Nicholas did you simply change the code or did you do a transformation?

Regards
Thomas


Jan Martin schrieb:
> Hi Nicholas,
>
> your assumption regarding your source UTM Zone beeing UTM 32N is wrong.
>
> Your coordinates are from Tunisia. And Tunisia is UTM 32S, not UTM 32N:
> http://upload.wikimedia.org/wikipedia/commons/8/85/LA2-Africa-UTM-zones.png
>
> But as you can see here EPSG:32632 is the right result of a conversion 
> from UTM Zone 32S to EPSG:
> http://spatialreference.org/ref/epsg/?search=32632&srtext=Search 
> <http://spatialreference.org/ref/epsg/?search=32632&srtext=Search>
>
> Question remains why your coordinates from Tunisia are displayed in 
> Algeria.
>
> I wonder if it is OK to just use EPSG:32632 as a projection for your 
> data, or if one would have to do math on the coordinates to.
> After all your coordinates have been recorded in *WGS84, UTM 32S.*
>
> Jan
>
> On Wed, Jun 10, 2009 at 6:08 PM, Nicholas Efremov-Kendall 
> <n.e.kendall at gmail.com <mailto:n.e.kendall at gmail.com>> wrote:
>
>
>     Hello all,
>
>     I believe this is more of a gis question, than for OpenLayers, but
>     the problem manifests itself in openlayers and I'm having some
>     trouble diagnosing it. Jan provided me with some very helpful
>     assistance, which led me to the conclusion that my projection was
>     wrong. I'm trying to display gps point originally recorded in UTM
>     32N. I had mistakenly believed this was EPSG 22332, but 36232 is
>     actually what I was going for. My problem is this: I have the
>     points overlaid on a wms server (thanks to Jan) but they're in the
>     wrong spot. However, when I change the EPSG code, the points don't
>     move. Does anyone have a suggestion for why they don't move? and
>     or for how to crack this nut.
>     best,
>     Nick
>
>
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-- 
*Thomas Maschler*
AFC International
**
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