The TRANTAB Procedure

INVERSE Statement

Creates an inverse of table one in a translation table. That is, it creates table two.

Featured in: Creating the Inverse of a Table

INVERSE;

Details
INVERSE does not preserve multiple translations. Suppose table one has two (or more) different characters translated to the same value; for example, "A" and "B" are both translated to "1". For table two, INVERSE uses the last translated character for the value; that is, "1" is always translated to "B" and not "A", assuming that "A" appears before "B" in the first table.

Operating environment sort programs in the SAS System require an inverse table for proper operation.

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