code: function minV(v) {
           var _vz = v.z || 0;
  
           return this._set(this._x < v.x ? this._x : v.x, this._y < v.y ? this._y : v.y, this._z < _vz ? this._z : _vz);
         }
docs: Update this vector with the minimum value between this and the passed vector
  @name minV
  @memberOf me.ObservableVector3d
  @function
  @param {me.Vector2d|me.Vector3d|me.ObservableVector2d|me.ObservableVector3d} v
  @return {me.ObservableVector3d} Reference to this object for method chaining