The FCB slot in fwdControl specifies the relationships between the catches ('C') taken by each fishery ('F') from different biological units ('B').
FCB(object, ...) <- value
# S4 method for class 'fwdControl'
FCB(object)
# S4 method for class 'fwdControl,matrix'
FCB(object) <- value
This slot is of class *matrix* and has thre columns, named 'F', 'C' and 'B', and as many rows as relationships between the FLBiol(s) and FLFishery(ies) objects the fwdControl refers to.
control <- fwdControl()
# Access FCB slot
FCB(control)
#> F C B
#> 1 NA NA NA
# Assign to existing fwdControl
FCB(control) <- FCB(c(f=1, c=1, b=2), c(f=1, c=2, b=2))