topic Problem: custom LODS makes disappear basemap in ArcGIS JavaScript Maps SDK Questions

Problem: custom LODS makes disappear basemap

YvanBérard — Mon, 19 Nov 2012 19:19:08 GMT

Hi all,

since i used custom LODS, my basemap won't show.

Why?

I'm using the basemap World_Imagery from ArcGIS Online.

Thank's for your help.

var basemapUrl = "http://server.arcgisonline.com/ArcGIS/rest/services/World_Imagery/MapServer"; var lods = [ {  "level": 0,  "resolution": 26.458386250105836,  "scale": 100000 }, {  "level": 1,  "resolution": 13.229193125052918,  "scale": 50000 }, {  "level": 2,  "resolution": 5.291677250021167,  "scale": 20000 }, {  "level": 3,  "resolution": 2.6458386250105836,  "scale": 10000 }, {  "level": 4,  "resolution": 1.3229193125052918,  "scale": 5000 }, {  "level": 5,  "resolution": 0.6614596562526459,  "scale": 2500 }, {  "level": 6,  "resolution": 0.26458386250105836,  "scale": 1000 }, {  "level": 7,  "resolution": 0.19843789687579377,  "scale": 750 }, {  "level": 8,  "resolution": 0.13229193125052918,  "scale": 500 }];  var initialExtent = new esri.geometry.Extent({"xmin":-8034661,"ymin":5652797,"xmax":-8004182,"ymax":5670187,"spatialReference":{"wkid":102100}});            map = new esri.Map("map", {  extent: initialExtent,  logo: true,  lods: lods });

Re: Problem: custom LODS makes disappear basemap

JeffPace — Mon, 19 Nov 2012 19:31:52 GMT

The AGO basemap is cached. You have to match your LODS to the services LODs

Re: Problem: custom LODS makes disappear basemap

YvanBérard — Mon, 19 Nov 2012 19:34:55 GMT

so i won't be able to use it if i still use my custom LODS?

Re: Problem: custom LODS makes disappear basemap

JeffPace — Mon, 19 Nov 2012 19:43:36 GMT

No. Its a cached service which means the tiles are pre-generated. No tiles exist at your defined scales

You either need to

1. Create your own basemap
2. Access the basemap dynamic (not sure you can do this)
3. Use the existing LODS.