This is a resend, as I have not had any responses. Tiles I request from an
ArcGIS Server cache using Layer.XYZ are not lining up with other layers
requested from the same server via Layer.WMS or Layer.ArcGIS93Rest.
Instead of making use of tileOrigin (which doesn't seem to get used), we make
sure the Origin as reported by ArcGIS is contained within the maxExtent, and
then use restrictedExtent to constrain the map area to the are we want OL to
work within:
var mapoptions = {
//tileOrigin: new OpenLayers.LonLat(-4020900,19998100), //Origin as reported
by ArcGIS
maxExtent: new OpenLayers.Bounds(-4020900, 4674128.11975, 2568710.79993,
19998100), //contains the AGS origin
restrictedExtent: new OpenLayers.Bounds(1018697.71047, 4674128.11975,
2568710.79993, 6296981.53325),
resolutions: new Array(3175.0063500127, 793.751587503175, 264.583862501058,
198.437896875794, 132.291931250529, 66.1459656252646, 26.4583862501058,
19.8437896875794, 13.2291931250529, 9.26043518753704, 6.61459656252646,
5.29167725002117, 3.96875793751588, 2.64583862501058, 1.98437896875794,
1.32291931250529),
tileSize: new OpenLayers.Size(256,256),
units: 'm',
projection: new OpenLayers.Projection('EPSG:2193'),
fractionalZoom: false
};
var map = new OpenLayers.Map( 'map',mapoptions );
var nzcoastwms = new OpenLayers.Layer.WMS( "Coastline",
"http://ws-esrimt/arcgis/services/mapservice_asurequality_prod/MapServer/WMSServer";,
{layers: ['0'], format: "image/png"},
{isBaseLayer: true, singleTile:true, visibility: true,
attribution:"LINZ data Crown copyright reserved"} );
var topoxyz = new OpenLayers.Layer.XYZ( "Topo",
"http://ws-esrimt/ArcGIS/rest/services/mapservice_topography_vector_prod/MapServer/tile/${z}/${y}/${x}";,
{isBaseLayer: false, sphericalMercator: false//, tileOrigin:
new OpenLayers.LonLat(-4020900,19998100)
});
map.addLayers([nzcoastwms,topoxyz]);
Doing this above, requests the correct tiles, but it seems the requested tiles
are displaced in a north-south direction. The displacement seems different
depending on zoom level. The latter is sometimes displaced to the north, and
sometimes to the south, depending on Zoom level. I have previously verified the
WMS layer is in the correct location.
Many thanks,
Robert Sanson
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