Function getZoomFromScale

getZoomFromScale(scaleDenominator, latitude?): number
JMap.Map.getZoomFromScale

returns the zoom corresponding to the given scale.
Parameters
- scaleDenominator: number
  must be greater than 0
- Optional latitude: number
  must be greater than 0
Returns number
Example
```
// returns the corresponding zoom level for the given scale 2344
JMap.Map.getZoomFromScale(2344)
```