cdm/src/main/java/ucar/ma2/Index.java
IndexIterator getIndexIterator(Array maa) {
    if (fastIterator)
      return new IteratorFast(size, maa);
    else
      return new IteratorImpl(maa);
  }
IndexIterator getIndexIterator(Array maa) {
    if (fastIterator)
      return new IteratorFast(size, maa);
    else
      return new IteratorImpl(maa);
  }
Get an index iterator for traversing the array in canonical order.

@param maa the array to iterate through
@return an index iterator for traversing the array in canonical order.
@see IndexIterator