gams:interpret_the_column_listing

Q: *I get in my lst file:*

X(1,1) (.LO, .L, .UP = 0, 0.0033, +INF) 1 equation_X(1,1) (-147.9179) Calc_Y(1,1)

*The Variable X is used in calc_y. What does each value correspond to ?*

Submitted by Arne Drud: The line: `X(1,1) (.LO, .L, .UP = 0, 0.0033, +INF)`

tells you which variable you are looking at and what its bounds and current value are.

The next line:`1 equation_X(1,1)`

tells you that the variable above appear in equation `euation_X(1,1)`

and the the coefficient is 1, and that the relationship is linear. If the relationship is nonlinear there will be a parenthesis around the coefficient as shown next.

The third line: `(-147.9179) Calc_Y(1,1)`

tells you that the same variable appear in equation `Calc_Y(1,1)`

,
that the derivative in the current point (X(1,1) = 0.0033 from above is -147.9179, and the parenthesis says that the derivative is nonlinear so it could be different in another point.

Check also Section 10.5.2 of the User's Guide.

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gams/interpret_the_column_listing.txt · Last modified: 2008/06/18 14:44 by support