Global concatenation
Xs = gcat(X)
Xs = gcat(X,dim)
Xs = gcat(X,dim,targetlab)
Xs = gcat(X) concatenates the variant array X from
each worker in the second dimension. The result is replicated on all
workers.
Xs = gcat(X,dim) concatenates the variant
array X from each worker in the dimension indicated
by dim.
Xs = gcat(X,dim,targetlab) performs the
reduction, and places the result into res only
on the worker indicated by targetlab. res is
set to [] on all other workers.
With four workers,
Xs = gcat(labindex)
returns Xs = [1 2 3 4] on all four workers.