+ * This method returns a new array containing the same number of tuples than \a this. To do this, this method needs \a at parameter to specify the convention of \a this.
+ * All the tuples of the returned array will be in cartesian sense. So if \a at equals to AX_CART the returned array is basically a deep copy of \a this.
+ * If \a at equals to AX_CYL the returned array will be the result of operation cylindric to cartesian of \a this...
+ *
+ * \param [in] atOfThis - The axis type of \a this.
+ * \return DataArrayDouble * - the new instance of DataArrayDouble (that must be dealed by caller) containing the result of the cartesianizification of \a this.