[OpenLayers-Users] reprojection issue

Jan Martin janmartin3 at googlemail.com
Wed Jun 10 12:38:31 EDT 2009


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

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> 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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