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GRBsetintattrelement
| int | GRBsetintattrelement ( | GRBmodel | *model, |
| const char | *attrname, | ||
| int | element, | ||
| int | newvalue ) |
Set a single value in an integer-valued array attribute.
Return value:
A non-zero return value indicates that a problem occurred while setting the attribute. Refer to the Error Code table for a list of possible return values. Details on the error can be obtained by calling GRBgeterrormsg.
Arguments:
model: A loaded optimization model, typically created by routine GRBnewmodel or GRBreadmodel.
attrname: The name of an integer-valued array attribute. Available attributes are listed and described in the Attributes section of this document.
element: The index of the array element to be changed.
newvalue: The value to which the attribute element should be set.
Important note:
Note that this method should be used for array attributes only (i.e., variable or constraint attributes). To modify a scalar attribute (i.e., a model attribute), use GRBsetintattr instead.
Example usage:
error = GRBsetintattrelement(model, "VBasis", 0, GRB_BASIC);
