Optional Arguments. DIM, SEGMENT
Description. Computes a segmented copy scan along
dimension DIM of ARRAY.
Class. Transformational function.
ARRAY may be of any type. It must not be scalar.
DIM (optional) must be scalar and of type integer with a value in the range , where is the rank of ARRAY.
SEGMENT (optional) must be of type logical and must have
the same shape as ARRAY.
Result Type, Type Parameter, and Shape. Same as ARRAY.
Result Value. Element of the result has the value
where is the set, in array element order, of
elements of ARRAY selected to contribute to by the
rules stated in Section 7.4.5. Note that this set
is never empty.
Example. COPY_PREFIX( (/1,2,3,4,5/), SEGMENT= (/F,F,F,T,T/) ) is [1 1 1 4 4].