NAME

Math::LP::Variable - variables used in linear programs

SYNOPSIS

use Math::LP::Variable;

# make a variable named x1
my $x1 = new Math::LP::Variable(name => 'x1');

# make an integer variable named x2
my $x2 = new Math::LP::Variable(name => 'x2', is_int => 1);

# make a variable named x3 initialized to 3.1415
my $x3 = new Math::LP::Variable(name => 'x3', value => '3.1415');

DESCRIPTION

DATA FIELDS

name

a string with the name of the variable (required)

is_int

a flag indicating whether the variable can only have integer values (optional, defaults to false)

value

a number representing the value of the variable (optional)

upper_bound

an upper bound to the value, defaults to 1E24

lower_bound

a lower bound to the value, defaults to 0

col_index

an integer number holding the index of the variable in the matrix of the LP the variable is used in (optional)

METHODS

Math::LP::Variable inherits all methods from Math::SimpleVariable, without adding any new methods.

SEE ALSO

More info on the base class is found in Math::SimpleVariable. The usage of Math::LP::Variables in linear programs is illustrated in Math::LP.

AUTHOR

Wim Verhaegen <wimv@cpan.org>

COPYRIGHT

Copyright(c) 2000-2001 Wim Verhaegen. All rights reserved. This program is free software; you can redistribute and/or modify it under the same terms as Perl itself.