check_length function

Check if valid input length

check_length(x, length, name)

Arguments

• x: Scaler or vector
• length: Length of x.
• name: Name of x for displaying errors.

Returns

x.

Details

Check if x has approprate length. If length of x is 1 then x is replicated to match length. If length of x is neither 1 or length then an error is signaled.