Logging intervals

Option to specify time intervals in which to log simulation data

Model Configuration Pane: Data Import/Export

Description

Specify time intervals during which to log data.

The logging intervals apply to:

• Time

• States

• Output

• Signal logging

• To Workspace blocks

• To File blocks

• Data logged to the workspace using a Record block

The logging intervals do not apply to:

• Final states data

• Data logged using scopes

• Data logged to a file using a Record block

• Data in the Simulation Data Inspector

Logging intervals do not affect data displayed in the Record block or using dashboard blocks.

Dependencies

To enable this parameter, select Single simulation output.

Settings

[-inf,inf] (default) | 2-by-n matrix

By default, the parameter value is [-inf,inf], and data is logged throughout the entire simulation.

Specify the time intervals in which to log data as a matrix with two columns. Each row contains the start and stop time for an interval in which the simulation logs simulation data. The first element is the start time for the interval, and the second element is the stop time for the interval.

The matrix must specify the logging intervals in chronological order, and the specified intervals must not overlap. The matrix must contain only real, double values and must not contain NaN values.

When you specify an interval that includes a time before the simulation start time or after the simulation stop time, no data is logged for that interval.

Tips

• The Decimation and Limit data points to last parameters also apply to logged data when you specify logging intervals.

• When you change the logging intervals while stepping through a simulation using the Step Forward and Step Backward buttons, the new logging intervals do not apply until you step forward.

• Software-in-the-loop (SIL) simulations support logging intervals for data returned in a Simulink.SimulationOutput object. In SIL simulations, specified logging intervals are ignored without warning for:

  • Data logged using a To File block

  • MAT file logging (enabled with the MAT-file logging configuration parameter)

• Processor-in-the-loop (PIL) simulations do not support logging intervals. Specified logging intervals are ignored without a warning message.

Recommended Settings

The table summarizes recommended values for this parameter based on considerations related to code generation.

Application	Setting
Debugging	No impact
Traceability	No impact
Efficiency	No recommendation
Safety precaution	No recommendation

Programmatic Use

Parameter: LoggingIntervals

Type: 2-by-n matrix that contains real, double values

Default: [-inf,inf]

Version History

Introduced in R2015b