IRIS Toolbox Reference Manual

# Grouping objects for aggregation of contributions

Grouping objects can be used for aggregating the contributions of shocks in model simulations, `model/simulate`, or aggregating the contributions of measurement variables in Kalman filtering, `model/filter`.

Grouping methods:

#### Constructor

- `grouping` - Create new, empty grouping object.

#### Getting information about groups

- `detail` - Details of a grouping object.
- `isempty` - True for empty grouping object.

#### Setting up and using groups

- `addgroup` - Add measurement variable or shock grouping to grouping object.
- `eval` - Evaluate contributions in input database S using grouping object G.

#### Getting on-line help on groups

    help grouping
    help grouping/function_name

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