PK_ERROR_code_t   PK_ATTRIB_set_named_vectors
(
--- received arguments ---
PK_ATTRIB_t       attrib,           --- attribute
const char       *field_name,       --- field name
int               n_vectors,        --- number of vectors (>=0)
const PK_VECTOR_t vectors[]         --- vectors to set
)


This function copies vectors into field field_name of the given
attribute.


Specific Errors:
    PK_ERROR_bad_name               The attribute does not have a field with
                                    this name
    PK_ERROR_field_of_wrong_type    The field is not a vector field


The new data replaces any existing data stored in the field.

If n_vectors is zero then this field is set to be empty.

The field should be of type vector, coordinate or direction.