Creating custom maps in the cloud. SettingZoomLevels - OpenLayers - Trac. The OpenLayers Map is designed to display each of its layers at different levels of Scale or Resolution.
The map object refers to these levels as ZoomLevels, and allows each layer to define its own ZoomLevels as it sees fit. To configure the ZoomLevels of any OpenLayers Layer, the user sets various properties in the options array on initialization. Normal Layers ΒΆ For normal layers which are based off of OpenLayers.Layer and are able to display at any resolution, there exist a multitude of different ways to configure the ZoomLevels and their respective scales and resolutions.