AnsweredAssumed Answered

Why is the World Imagery basemap loading so slow?

Question asked by ibroad on Jul 5, 2017
Latest reply on Jul 5, 2017 by LDanzinger-esristaff

I don't initially load the World Imagery basemap inside the Map object because I want it off by default. Also, the map is in our local state plane coordinate system.

 

So, I have something like:

SpatialReference {
     id: sr
     wkid: 102726
}

Map {
     id: map
     spatialReference: sr
}

ArcGISMapImageLayer {
     id: basemapLayer
     url: "https://services.arcgisonline.com/ArcGIS/rest/services/World_Imagery/MapServer"

     visible: false
     opacity: 0.60
}

 

And then I have a button that when clicked turns the basemapLayer on/off.

 

I'm surprised how slow the imagery loads, even over a wifi connection. Is this due to the spatial reference of the map, and the imagery needing to reproject on the fly?

 

I've noticed when I zoom in pretty close to say a building, the imagery just never even loads.

Outcomes