A pointer to the DATASET structure to be converted.
RETURNS
The set ioset, converted to a LABELSET (see DATASET-flags); or NULL
if an error occured.
FUNCTION
A new dataset is created using malloc_dataset and the contents of ioset
are copied into it, including all descriptions. The SetId field is increased by
1, and to the SetText the string "++ REMADE FROM AN IOSET ++" is added.
Also, the CreationDate is set using the time_stamp routine and
SetFlag is set to LABELSET.
Finally, all SAMPLE structures are copied (using malloc_sample).
An output vector is constructed
assuming place coding -
each output vector is replaced with an output label containing the index of
the maximum element in the output vector. This index is found using the vector_index_max function.
If the set's NumOutputs was 1, the NumOutputs of the new set will be set
to 2, i.e. the dataset is believed to have two classes, represented by an
output value smaller than 0.5 and larger than 0.5, respectively.
NOTE
The original dataset (ioset) is not freed or changed.
