Choosing the Reference State
Choosing the Reference State
Whether you are using the current or a reference model you must define which state in that model is to be used as the "reference" one.
You can use either a fixed state number, or a changing "current" one.
Using a fixed reference state |
This is the default case, invariably used when plotting data relative to the current model. You simply select a valid state from the model, and this is used as the reference state. It is perfectly legal to select a fixed state from a different model too. |
Using the "current" state |
This meaningless if the reference model is the current model, since results will always be zero. But if plotting relative to a different reference model it is a powerful tool, especially during animations: For each state <i> the data from the equivalent state <i> in the reference model is subtracted. This means that you can see how the differences between two models vary over time. Obviously it is important to make sure that the states in the two models have the same times, as no check is made for time equivalence. |