Function convertArea

convertArea(area, toUnit, fromUnit?): number
JMap.Geometry.convertArea

Converts the distance from a unit to another.
Parameters
- area: number
  the area to convert
- toUnit: JMAP_DISTANCE_UNITS
  the output unit
- Optional fromUnit: JMAP_DISTANCE_UNITS
  the input unit
Returns number
Throws
if invalid parameters

Example
```
// returns 2 square kilometers in square miles
JMap.Geometry.convertArea(2, "miles")

// returns 200 square meters in square yards
JMap.Geometry.convertArea(200, "yards", "meters")
```