How to obtain to Max zoom levels for Google layer using Open layers

Question

I was trying to obtain maximum zoom level ( level 22) for Google street map using Openlayers.layer.google script.

The following code does not seem to work.It works to the maximum zoom level when Var zoom is set to 15. below or above 15, it set centre to world extent.

Any idea what went wrong ? we tried using Google maps API v2 and v3 , same result for Maxm zoom, except for value = 15.

var position = new OpenLayers.LonLat(lon, lat).transform(fromProjection, toProjection); var zoom = 22; map.setCenter(position, zoom);

Answer 1

You need to configure your Google layer with an appropriate numZoomLevels value, and also override the internal default for the maximum zoom level with MAX_ZOOM_LEVEL. The latter will cause unexpected behavior if the Google layer does not support all zoom levels.

new OpenLayers.Layer.Google('Satellite', {
    type: google.maps.MapTypeId.SATELLITE,
    numZoomLevels: 23,
    MAX_ZOOM_LEVEL: 22
});