I have also seen some really odd behavior out of the Google layers if there is a DIV anywhere around the map with position:static. I am planning to do some more research into this, but as a quick workaround I have had to put the map outside of the popups layout and then dynamically position it on top of the content area on a higher z value to work around this.
Jo Cook wrote: > > Hi Andreas, > > Yes, adding this code in a simple page with a fixed size map div worked > fine, no displacement. I will experiment more with the mapfish setup, and > bring this up on the mapfish list if I can't figure it out. > > Thanks for your help > > Jo > ----- Original Message ----- > From: "Andreas Hocevar (via Nabble)" > <[email protected]> > To: "Jo Cook" <[email protected]> > Sent: Friday, 24 April, 2009 21:35:30 GMT +00:00 GMT Britain, Ireland, > Portugal > Subject: Re: [OpenLayers-Users] displacement of google satellite data > compared to google streetmap > > Jo Cook wrote: >> Hi Andreas, >> >> I've tried your new patch for bug 1797 but it doesn't do anything for me. >> I >> don't know if it's because I'm not seeing this problem when I resize the >> map, but when I simply switch layers. I'm not using a vector layer over >> the >> top, just a WMS (non baselayer), so I haven't seen the issues with popup >> alignment. >> > > So it seems your issue is a different one. Maybe you have some weird css > on the page where you place the map? Try to use the code you posted > below in an empty html page without css and just a map div. > > Other than that, does the workaround to specify the map div's width and > height in pixels work for you? > > Regards, > Andreas. > > >> Andreas Hocevar-2 wrote: >> >>> Hi, >>> >>> this is a known issue, unfortunately without a good solution at the >>> moment: >>> http://trac.openlayers.org/ticket/1797 >>> http://trac.openlayers.org/ticket/2055 >>> >>> A workaround is to specify the map div's width and height in pixels. >>> >>> Regards, >>> Andreas. >>> >>> Joanne Cook wrote: >>> >>>> Hi List, >>>> >>>> I have a map that I thought was all correctly set up to use spherical >>>> mercator, and all my data (which is all projected in 900913) is >>>> correctly >>>> displaying on either open streetmap or google streets data. However, >>>> when >>>> I add a google satellite or hybrid layer, the initial load of the map >>>> shows the satellite layer displaced several hundred miles to the west. >>>> If >>>> I switch to the google streets layer without any zooming or panning, >>>> the >>>> displacement disappears. If I then switch back to the google satellite >>>> layer, again with no zooming or panning, it appears in the correct >>>> place. >>>> Throughout all of this, my data layer has no displacement. Furthermore, >>>> since all of this is set within mapfish, with extjs used for side >>>> panels, >>>> if I minimise the side panel while the displacement is occurring it >>>> also >>>> removes the displacement. I'm using the svn versions of openlayers and >>>> mapfish. >>>> >>>> This is the code relating to setting up the map and layers: >>>> >>>> function createMap() { >>>> var options = { >>>> projection: new OpenLayers.Projection("EPSG:900913"), >>>> displayProjection: new OpenLayers.Projection("EPSG:27700"), >>>> units: "m", >>>> maxResolution: 156543.0339, >>>> maxExtent: new OpenLayers.Bounds(-20037508.34, -20037508.34, >>>> 20037508.34, >>>> 20037508.34) >>>> }; >>>> return new OpenLayers.Map('olmap',options); >>>> } //end createmap >>>> >>>> function addlayers(map){ >>>> >>>> >>>> // define wms >>>> layer = new OpenLayers.Layer.WMS("OA Sites WMS", >>>> " http://geoserver.thehumanjourney.net:80/geoserver/wms ?", >>>> {layers: 'oadigi:oasites', transparent: true, >>>> format: 'image/png', buffer:0}, >>>> {isBaseLayer: false}); >>>> >>>> >>>> >>>> // create Google Mercator layers >>>> var gmap = new OpenLayers.Layer.Google( >>>> "Google Streets", >>>> {'sphericalMercator': true} >>>> ); >>>> var gsat = new OpenLayers.Layer.Google( >>>> "Google Satellite", >>>> {type: G_SATELLITE_MAP, 'sphericalMercator': true, >>>> numZoomLevels: 22} >>>> ); >>>> var ghyb = new OpenLayers.Layer.Google( >>>> "Google Hybrid", >>>> {type: G_HYBRID_MAP, 'sphericalMercator': true} >>>> ); >>>> >>>> >>>> // define pseudo-layer for highlighting selected features >>>> select = new OpenLayers.Layer.Vector("Selection", >>>> {protocol: new mapfish.Protocol.TriggerEventDecorator(protocol), >>>> strategies: [new mapfish.Strategy.ProtocolListener({append: true})], >>>> styleMap: new >>>> OpenLayers.Style(OpenLayers.Feature.Vector.style["select"]), >>>> displayInLayerSwitcher: false}); >>>> >>>> >>>> // add layers >>>> map.addLayers([layer, select, gmap, gsat, ghyb]); >>>> >>>> } //end addlayers >>>> >>>> function setMapCenter() { >>>> //define a new projection object so map can be centred using latlong >>>> var proj = new OpenLayers.Projection("EPSG:4326"); >>>> var point = new OpenLayers.LonLat(-2.9, 53.6); >>>> this.setCenter(point.transform(proj, this.getProjectionObject()), 6); >>>> } //end setMapCenter >>>> >>>> I hope that's enough information for someone as it's hard for me to get >>>> this map accessible to the outside world yet. >>>> >>>> Many thanks >>>> >>>> Jo >>>> >>>> >>>> >>> -- >>> Andreas Hocevar >>> OpenGeo - http://opengeo.org/ >>> Expert service straight from the developers. >>> >>> _______________________________________________ >>> Users mailing list >>> us...@... >>> http://openlayers.org/mailman/listinfo/users >>> >>> >>> >> >> > _______________________________________________ > Users mailing list > us...@... > http://openlayers.org/mailman/listinfo/users > > > > > This email is a reply to your post @ > http://n2.nabble.com/displacement-of-google-satellite-data-compared-to-google-streetmap-tp2682471p2698857.html > > You can reply by email or by visting the link above. > > -- > ----------------------------------------------------- > Joanne Cook > Senior IT Support and Development > Oxford Archaeology (North) > 01524 880212 > http://thehumanjourney.net > > > ------ > Files attached to this email may be in ISO 26300 format (OASIS Open > Document Format). If you have difficulty opening them, please visit > http://iso26300.info for more information. > > _______________________________________________ > Users mailing list > [email protected] > http://openlayers.org/mailman/listinfo/users > > -- View this message in context: http://n2.nabble.com/displacement-of-google-satellite-data-compared-to-google-streetmap-tp2682471p2803669.html Sent from the OpenLayers Users mailing list archive at Nabble.com. _______________________________________________ Users mailing list [email protected] http://openlayers.org/mailman/listinfo/users
