function (point, clamp) {
        var coord = this.pointToCoord(point);
        return [
            this._radiusAxis.radiusToData(coord[0], clamp),
            this._angleAxis.angleToData(coord[1], clamp)
        ];
    }
function (point, clamp) {
        var coord = this.pointToCoord(point);
        return [
            this._radiusAxis.radiusToData(coord[0], clamp),
            this._angleAxis.angleToData(coord[1], clamp)
        ];
    }
function ( point , clamp ) { var coord = this . pointToCoord ( point ) ; return [ this . _radiusAxis . radiusToData ( coord [ 0 ] , clamp ) , this . _angleAxis . angleToData ( coord [ 1 ] , clamp ) ] ; }
Convert a (x, y) point to data
@param {Array.<number>} point
@param {boolean} [clamp=false]
@return {Array.<number>}
Convert a ( x y ) point to data
Returns the data for a point