DO Function

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DO Function

produces an arithmetic series

DO( start, stop, increment)

The inputs to the DO function are as follows:

start: is the starting value for the series.
stop: is the stopping value for the series.
increment: is an increment value.

The DO function creates a row vector containing a sequence of numbers starting with start and incrementing by increment as long as the elements are less than or equal to stop (greater than or equal to stop for a negative increment). This function is a generalization of the index creation operator (:).

For example, the statement

   i=do(3,18,3);

yields the result

         I             1 row       6 cols    (numeric)

         3         6         9        12        15        18

The statement

   j=do(3,-1,-1);

yields the result

          J             1 row       5 cols    (numeric)

          3         2         1         0        -1

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