Spatial Reference changes after adding OpenStreetMap layer from 4326 to 102100

ArminPourbeik — Sat, 11 Jun 2016 16:47:49 GMT

Hi,

I'm using a featureLayer, I want to use OSM as a base map, after adding osm layer my map spatial reference changes from 4326 to 102100 (web Mercator), even if I set my osm layer spatial reference to 4326, how can I fix this problem?

thanks;

function startup() {

var sr = new esri.SpatialReference({wkid: 4326});

var startextent = new esri.geometry.Extent(

50.9484,

35.9424,

52.0264,

36.4271,

);

lyr_branches = new esri.layers.FeatureLayer('http://localhost:6080/arcgis/rest/services/DayBank/MapServer/7', {

mode: esri.layers.FeatureLayer.MODE_SNAPSHOT,

id: "branches",

outFields: ['*']

});

map = new esri.Map('map', {

extent: startextent,

center: [51.420598, 35.721900],

zoom: 11,

fadeOnZoom: true,

minZoom: 10,

spatialReference: new esri.SpatialReference({wkid: 4326})

});

osm = new esri.layers.OpenStreetMapLayer({

id: "osm",

initialٍExtent: startextent,

spatialReference: new esri.SpatialReference({

wkid: 4326

}),

center: [51.420598, 35.721900]

});

var selectionSymbol = new esri.symbol.SimpleMarkerSymbol();

selectionSymbol.setSize(20);

selectionSymbol.setColor(new dojo.Color([255, 0, 0, 0.5]));

lyr_branches.setSelectionSymbol(selectionSymbol);

// map.addLayer(osm);

map.addLayer(lyr_branches);

var featureTable = new esri.dijit.FeatureTable({

featureLayer: lyr_branches,

map: map,

editable: false,

showGridHeader: false,

showGridMenu: false,

showDataTypes: false,

outFields: ["PostalCode", "Telephone", "Fax", "Address", "Code", "Name"]

}, 'myTableNode');

featureTable.startup();

//create query task

queryTask = new esri.tasks.QueryTask('http://localhost:6080/arcgis/rest/services/DayBank/MapServer/7');

cf = new esri.tasks.ClosestFacilityTask('http://localhost:6080/arcgis/rest/services/DayBank/NAServer/Closest%20Facility');

Re: Spatial Reference changes after adding OpenStreetMap layer from 4326 to 102100

RobertScheitlin__GISP — Sun, 12 Jun 2016 02:12:55 GMT

Armin,

Almost all esri basemaps are web mercator 102100. So it is normal for the maps spatial reference to change to 102100 after applying an esri basemap.

Re: Spatial Reference changes after adding OpenStreetMap layer from 4326 to 102100

ArminPourbeik — Sun, 12 Jun 2016 10:26:58 GMT

thanks for your answer Robert,

I'm getting user's current location with HTML5 Geolocation API which gives me coordinates in 4326 Spatial Reference. as I want to use this point as incidents in closest facility network analysis, I must convert this point's spatial reference to my map and facilitiy points which is 102100, so how can I do that? I tried proj4js but I didn't succeed...

Re: Spatial Reference changes after adding OpenStreetMap layer from 4326 to 102100

ArminPourbeik — Sun, 12 Jun 2016 11:37:57 GMT

Oh, I just found esri.geometry.lngLatToXY() method.

thanks any way;)

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Spatial Reference changes after adding OpenStreetMap layer from 4326 to 102100

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