On Wed, Feb 10, 2010 at 12:11:46PM -0800, David Van Gilst wrote: > Hello, I'm relatively new to OpenLayers and having a problem with a > relatively basic setup... > > I'm using the Google Base Maps and trying to add a point feature to the map > at point -70.84480 and -53.00471. (The airport in Punta Arenas, Chile). When > I add the point, the blue star appears at the correct longitude, but at an > incorrect latitude. Furthermore, the point moves when I drag the map up or > down, jumping to a different latitude when the mouse button is released. > Additionally, when the map is dragged far enough to the right/east, the > point disappears.
http://faq.openlayers.org/vector-related-questions/why-dont-my-vector-features-work-over-google-yahoo-virtual-earth-etc/ -- Chris > I've tried using point.transform of the point geometry and changing the > projection on the vector layer, and been unable to fix this behavior. I'm > sure I'm missing something relatively simple, but I'm new to this and after > two days of digging around the documentation and examples, I'm not sure what > it is. Any suggestions would be appreciated. > > The code can be found at: http://128.177.27.207/display.html > > or: > > var layer_style = OpenLayers.Util.extend({}, > OpenLayers.Feature.Vector.style['default']); > layer_style.fillOpacity = 0.2; > layer_style.graphicOpacity = 1; > > var style_blue = OpenLayers.Util.extend({}, layer_style); > style_blue.strokeColor = "blue"; > style_blue.fillColor = "blue"; > style_blue.graphicName = "star"; > style_blue.pointRadius = 10; > style_blue.strokeWidth = 3; > style_blue.rotation = 45; > style_blue.strokeLinecap = "butt"; > > var options = { > projection: new OpenLayers.Projection("EPSG:900913"), > units: "m", > numZoomLevels: 18, > maxResolution: 'auto', > maxExtent: new OpenLayers.Bounds(-20037508, -20037508, > 20037508, 20037508.34), > sphericalMercator: true > }; > > var map = new OpenLayers.Map('map', options); > > var google_physical = > new OpenLayers.Layer.Google("Google Physical", > {type: G_PHYSICAL_MAP}); > var google_sattelite = > new OpenLayers.Layer.Google("Google Satellite", > {type: G_SATELLITE_MAP}); > var google_hybrid = > new OpenLayers.Layer.Google("Google Hybrid", > {type: G_HYBRID_MAP}); > > map.addLayers([google_sattelite, > google_physical, google_hybrid]); > > map.addControl(new OpenLayers.Control.LayerSwitcher()); > map.addControl(new OpenLayers.Control.MousePosition()); > map.addControl(new OpenLayers.Control.KeyboardDefaults()); > > map.setCenter(new OpenLayers.LonLat(-13200000, 4500000), 5); > map.zoomToMaxExtent(); > > var vectorLayer = > new OpenLayers.Layer.Vector("Aircraft Location"); > > var point = new OpenLayers.Geometry.Point(-70.84480, > -53.00471); > > var feature = new OpenLayers.Feature.Vector( > point, > null, > style_blue); > > vectorLayer.addFeatures(feature); > map.addLayer(vectorLayer); > > > > > David Van Gilst > DC-8 Network Engineer > National Suborbital Education and Research Center > University of North Dakota > (701) 330-2978 > d.vangi...@nserc.und.edu > _______________________________________________ > Users mailing list > Users@openlayers.org > http://openlayers.org/mailman/listinfo/users -- Christopher Schmidt MetaCarta _______________________________________________ Users mailing list Users@openlayers.org http://openlayers.org/mailman/listinfo/users
