SEQUENTIAL

Sequential mapping

    V = SEQUENTIAL(W1,W2)
    B = SEQUENTIAL(A,W)

Input
W,W1,W2	Mappings
A	Dataset

Output
V	Sequentially combined mapping
B	Dataset

Description

The two mappings W1 and W2 are combined into a single mapping V. Note  that SEQUENTIAL(W1,W2) is equivalent to W1*W2. If W2 is a mapping of  a type 'combiner', it is called to make a combination attempt.  SEQUENTIAL(A,W) maps the dataset A by the sequential mapping W.

This routine is automatically called to execute W = W1*W2 or B = A*W2 in  case W2 is a sequential mapping. It should not be directly called by users.

See also

mappings, datasets,