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3.2.8 The VARIABLES or COLUMNS Data Cards
(Group/Row-Wise)
The VARIABLES or COLUMNS indicator cards
are used interchangeably to announce the (problem) variables
for the minimization. The user may also give a scaling factor for the
entries in the column.
The syntax for data following this indicator card is given in
Figure 3.9.
Figure 3.9:
Possible data cards for VARIABLES or
COLUMNS (row-wise)
 |
The string varbl-name in data field 2 gives the name of the
variable (or column)
under consideration. This name may be up to ten
characters long excepting that the name `SCALE'
is not allowed.
If data field 1 holds the character X or Z, an array
definition is to be made. In this case, the expanded array name
of the variables (or columns) must be valid and the integer indices
must have been defined in a parameter assignment (see
Section 3.2.3).
The string $$$$$$$$$$ in data field 3 is used for four
purposes.
- If the string is empty, the card is just defining the name
of a problem variable.
Such a card
must be inserted for all variables that only appear in
nonlinear elements.
- It may be used to announce that all the entries in the linear elements
for the variable under consideration are to be scaled.
On Z cards,
the numerical value of this scale factor, the amount
by which each entry is to be divided, is that previously associated
with the real parameter r-p-a-name given in field 5. On other
cards,
the actual scale factor numerical-vl occupies up to 12
characters in data field 4.
- It may be used to specify that the variable(s) mentioned in field 2
is(are) only allowed to take integer values. In this case field 3 will
contain the string 'INTEGER'.
- It may be used to specify that the variable(s) mentioned in field 2
is(are) only allowed to take the values 0 or 1. In this case field 3 will
contain the string 'ZERO-ONE'.
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