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Problem: Switching to a custom basemap zooms to the basemap full extent in Portal for ArcGIS Map Viewer

Description

In Portal for ArcGIS Map Viewer, switching to a custom basemap causes the map to zoom to the full extent of the basemap. In some cases, the data in the map is no longer visible as the map extent is changed to the basemap's full extent.

Cause

This issue occurs because the custom basemap extent is set to a specific area and does not cover the globe.

Solution or Workaround

Set the extent of the custom basemap to cover the globe. To achieve this, change the extent of the custom basemap web map according to the following coordinates:

  • Left: -180
  • Right: 180
  • Top: 90
  • Bottom: -90


Click OK to save the extent settings and reflect the changes to the custom basemap.

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