[OpenLayers-Users] KML reprojection?

[Eric Lemoine]

On Tuesday, August 18, 2009, Jeremy Husmann
<Jeremy.Husmann at critchlow.co.nz> wrote:
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> Hello everyone,


Hi


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> I am in the process of adding a KML as a baselayer (I was
> quickly helped by Eric and Christopher by finding the constructor attribute
> need for this.).
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> Now I seem to have stuck another in relation to projections.
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> I have noticed that if I add the KML as the only base layer
> it comes out a bit squashed, when if I don’t change any projection
> settings and just add a WMS layer as another base layer it seems to correct the
> KML. – Unsure if anything is going on behind the scenes (with my KML
> being reprojected?) or if im just missing something extremely obvious. –
> Any help would be appreciated.

What if you remove the TMS layer and have the vector layer as the only
layer in the map?


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>         function
> mapInit()
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>             {
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>                         var
> nzBounds = new OpenLayers.Bounds(165, -47, 180, -34.5).transform((new
> OpenLayers.Projection("EPSG:4326")), (new
> OpenLayers.Projection("EPSG:900913")));
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>                         var
> options =
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>                         {
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>                                     projection:
> new OpenLayers.Projection("EPSG:900913"),
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>                                     displayProjection:
> new OpenLayers.Projection("EPSG:4326"),
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>                                     units:
> "m",
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>                                     maxResolution:
> 16543.0339,
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>                                     maxExtent:
> nzBounds,
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>                                     numZoomLevels:
> 24,
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>                                     minZoomLevel:
> 6,
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>                                     maxZoomLevel:18,
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>                                     controls:
> [
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> new OpenLayers.Control.Navigation(),
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> new OpenLayers.Control.LayerSwitcher({'ascending':false}),
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>                                     new
> OpenLayers.Control.PanZoomBar({zoomWorldIcon:true})
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>                                     ]
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>                         };
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> map = new OpenLayers.Map('map', options);
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>                         map.addControl(new
> OpenLayers.Control.LayerSwitcher());
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> var mapnik = new OpenLayers.Layer.TMS(
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> "OpenStreetMap (Mapnik)",
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> "http://tile.openstreetmap.org/",
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> {
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> type: 'png',
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> displayOutsideMaxExtent: true,
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> attribution: '<a
> href="http://www.openstreetmap.org/">OpenStreetMap</a>'
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> }
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> );
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> mapnik.setVisibility(false);
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>                         var
> time = new Date();
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>                         var
> secs = time.getSeconds();
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>                         postCodeKml
> = new OpenLayers.Layer.GML("CoverageTEST",
> "kml/coverage_1.kml?" + secs,
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>                         {
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> format: OpenLayers.Format.KML,
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> projection:map.displayProjection,
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> isBaseLayer:true,
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> formatOptions: {
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> extractStyles: true,
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> extractAttributes: true
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> }
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> }
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> );
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> map.addLayers([mapnik]);
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>                         postCodeKml.setVisibility(true);
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>                         map.addLayer(postCodeKml);
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>                         postCodeKml.setOpacity(0.25);
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>                         map.zoomToExtent(nzBounds);
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> map.addControl(new OpenLayers.Control.MousePosition());
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-- 
Eric Lemoine

Camptocamp France SAS
Savoie Technolac, BP 352
73377 Le Bourget du Lac, Cedex

Tel : 00 33 4 79 44 44 96
Mail : eric.lemoine at camptocamp.com
http://www.camptocamp.com