How to declare a real variable with positive as well as negative values?

Pritha
21 ●1 ●1 ●3

I am using sage 6.1.1 on ubuntu. Declaration of a milp variable with milp.new_variable(real=True) only declares a positive valued variable. How do I declare a real variable with a positive as well as negative values?

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answered 9 years ago

tmonteil
27483 ●32 ●205 ●519 http://wiki.sagemath.o...

As explained in the doc of the new_variable method, you should use the nonnegative option:

milp.new_variable(real=True, nonnegative=False)

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