10 One case is defined by a set of data and of choices, packed together
11 through the user interface of the module. The data are physical
12 measurements that have to be available before or during the case
13 execution. The simulation code(s) and the assimilation methods and
14 parameters has to be chosen, they define the execution properties of the
18 One iteration occurs when using iterative optimizers (e.g. 3DVAR), and it
19 is entirely hidden in the main YACS OptimizerLoop Node named
20 "compute_bloc". Nevertheless, the user can watch the iterative process
21 throught the *YACS Container Log* window, which is updated during the
22 process, and using *Observers* attached to calculation variables.