Why doesn't the annotation and the map match?
There are two arcgis map services.
The map service is http://mape.shanghai-map.net/ArcGIS/rest/services/SHMAP_D/MapServer.
The annotation service is http://mape.shanghai-map.net/ArcGIS/rest/services/SHMAP_DZJ/MapServer.
The webgis which I use is openlayer3.
new ol.layer.Tile({
source: new ol.source.TileArcGISRest({
url: "http://mape.shanghai-map.net/ArcGIS/rest/services/SHMAP_D/MapServer"
})
}),
new ol.layer.Tile({
source: new ol.source.TileArcGISRest({
url: "http://mape.shanghai-map.net/ArcGIS/rest/services/SHMAP_DZJ/MapServer"
})
})
But the annotation doesn't match the map.
1、Does the annotation has to import with special method in openlayer3? Why doesn't the annotation and the map match?
I tried use map tile of the two service, But I can't exactly calculate the Y value and I don't know the {z}/{y}/{x}?
I tried use a function of openlayer3 to calculate the z\ y\x value, but I can't calculate the Y value very accurate.
The code as below:
var source = new ol.source.XYZ({
wrapX: false,
// tileSize: 512,
tilePixelRatio: 2,
tileGrid: ol.tilegrid.createXYZ({}),
tileUrlFunction: function (tileCoord) {
const u = 'http://mape.shanghai-map.net/ArcGIS/rest/services/SHMAP_D/MapServer';
let z = tileCoord[0];
let x = tileCoord[1];
let y = -tileCoord[2] - 1;
// let z = 'L' + (this.zeroPad(tileCoord[0], 2, 10));
// let x = 'C' + this.zeroPad(tileCoord[1], 8, 16);
// let y = 'R' + this.zeroPad(-tileCoord[2] - 1, 8, 16);
return u + '/tile/' + (z - 10) + '/' + (y - Math.pow(2, z - 2) + Math.pow(2, z - 😎 + 1) + '/' + x;
}
2、Why should I have to calculate the z\ y\x value?
Doesn't use http://mape.shanghai-map.net/ArcGIS/rest/services/SHMAP_DZJ/MapServer/tile/{z}/{y}/{x} directtly?
How can I calculate the y-value right?
