Add a custom halo around the globe
Use the halo option in the map constructor to create a custom halo. You can define a radial gradient with scale and stops to add a custom atmospheric glow around the globe.
This option only takes effect when used in conjunction with the projection: 'globe' parameter.
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For halo customization, check the RadialGradientLayerConstructorOptions.
Related examples
An extension of MapLibre GL JS