Dear Viola,
it's seams more or less the same problem I have[1]
have you verified if the same WMS service is correctly overlayed to a
google or osm layer using the on the fly re-projection in QGis? This
could be a test to confirm that the data are ok...
Moreover looking inside your code you are displaying a WMS service
declared as EPSG:32737 on a map with a projection parameter set as
EPSG:3857... I'm a newbie with openlayers and I was asking me if is it
enough to get a reprojection of the WMS map?
cheers
Manuele
[1]
http://sourceforge.net/mailarchive/forum.php?thread_name=4E71BD08.1040004%40bruttocarattere.org&forum_name=geoserver-users
<http://sourceforge.net/mailarchive/forum.php?thread_name=4E71BD08.1040004%40bruttocarattere.org&forum_name=geoserver-users>
On 29/08/2011 14:08, Viola Anne wrote:
Hello list,
I am trying to overlay wms on google satellite, I have read a few
articles on the same and finally what i have is
*ONE*: the WMS layers overlaying vertically but there seems to be a
spatial shift horizontally (to the right).
*TWO*: the WMS does NOT overlay AT ALL at certain zoom levels, while
at other zoom levels works as described in *ONE. */attached a
screenshot of the shift/
*
*
i have downloaded proj4js folder and copied into openlayers folder
then included the <script type='text/javascript'
src="openlayers/proj4js/lib/proj4js-combined.js"></script> just before
openlayers.js script. In geoserver i have set the SRS to EPSG:32737
and below is relevant piece of openlayers code and a screenshot of the
wms & google overlay
Proj4js.defs["EPSG:32737"] ="+proj=utm +zone=37 +south +ellps=WGS84
+datum=WGS84 +units=m +no_defs ";
Proj4js.defs["EPSG:3857"]=Proj4js.defs["GOOGLE"];
var mapExtent= new OpenLayers.Bounds(170361.569,
9963401.274,183801.419, 9971245.621);
mapExtent.transform(new OpenLayers.Projection('EPSG:32737'), new
OpenLayers.Projection('EPSG:3857'));
var options = {
projection: new OpenLayers.Projection("EPSG:3857"),
displayProjection: new OpenLayers.Projection("EPSG:32737"),
units: "m",
//maxResolution: "auto",
maxResolution: 156543.0339,
maxExtent: mapExtent ,
minExtent: "auto",
restrictedExtent: mapExtent
};
map = new OpenLayers.Map('map', options);
var LandParcel= new OpenLayers.Layer.WMS(
"Land Parcels",
"http://localhost:8082/geoserver/wms";,
{layers:"nakinfo:nk_land_parcels",
tiled: true,
format:"image/gif",
transparent:true,
projection: new OpenLayers.Projection("EPSG:32737")},
{visibility: false, opacity:0.3}
);
map.addLayer(LandParcel);
--
Kind Regards,
Viola
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