Layers on Interactive Map within a Storymap not loading immediately

[SimonLaughton]

Hello there

We have a bit of an issue - well more of a bugbear really.

We have a Storymap which has an interactive map embedded in it.  The link is:

New Neighbourhoods (arcgis.com)

If you scroll to Neighbourhood locations - each of the 5 bullet points shown have a location on the map next to it.  However, you will see that they do not load.  If you drag the map and play with it a little the layers then appear.  Our concern is people will scroll past the map thinking it is blank.

Has anyone a suggestion as to why you need to interact with the map for those layers to appear?

Thanks!

[ChristopherCounsell · Accepted solution]

Look at your developer tools > Network. Sort by time.

https://maps.strata.solutions/arcgis/rest/services/tdc/GC_New_Neighbourhoods/MapServer/export?bbox=-...

This takes 30 seconds to generate.

Note the SR is 102100. Web Mercator standard.

Looking at your map

https://arcgis.com/apps/mapviewer/index.html?webmap=96466088c1ba4275b6df99c925bee9f4

And layer

https://maps.strata.solutions/arcgis/rest/services/tdc/GC_New_Neighbourhoods/MapServer/0

Spatial reference is 27700. Can't see the basemap but it looks custom.

It looks like the data is being reprojected from british grid to web mercator and that is taking some time?

I would recommend:

• Publishing the layer in Web Mercator Auxilliary Sphere, on a standard Esri basemap (at least for timing/testing)
• Publish as a Vector Tile Layer (with associated feature layer if pop-ups need to be retained).