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Collect metric data



execute(metricEngine,metricIDs) collects results in the metricEngine object specified by metricEngine for the metrics specified by metricIDs.

execute(metricEngine,metricIDs,'ArtifactScope',scope) collects metric results for the artifacts in the specified scope. For example, you can specify scope to be a single design unit in your project, such as a Simulink® model or an entire model reference hierarchy. A unit is a functional entity in your software architecture that you can execute and test independently or as part of larger system tests.


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Use a metric.Engine object to collect design cost metric data on a model reference hierarchy in a project.

To open the project, enter this command.


The project contains db_Controller, which is the top-level model in a model reference hierarchy. This model reference hierarchy represents one design unit.

Create a metric.Engine object.

metric_engine = metric.Engine();

Update the trace information for metric_engine to reflect any pending artifact changes.


Create an array of metric identifiers for the metrics you want to collect. For this example, create a list of all available design cost estimation metrics.

metric_Ids = getAvailableMetricIds(metric_engine,...
metric_Ids = 

  1×2 string array

    "DataSegmentEstimate"    "OperatorCount"

To collect results, execute the metric engine.


Because the engine was executed without the argument for ArtifactScope, the engine collects metrics for the db_Controller model reference hierarchy.

Use the generateReport function to access detailed metric results in a pdf report. Name the report 'MetricResultsReport.pdf'.

reportLocation = fullfile(pwd,'MetricResultsReport.pdf');

The report contains a detailed breakdown of the operator count and data segment estimate metric results.

Table of contents for generated report.

Input Arguments

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Metric engine object for which to collect metric results, specified as a metric.Engine object.

Metric identifiers for metrics to collect, specified as a character vector or cell array of character vectors. Collecting results for design cost metrics requires a Fixed-Point Designer™ license. For a list of design cost metrics and their identifiers, see Design Cost Model Metrics. For additional metrics, see Model Testing Metrics (Simulink Check).

Example: 'DataSegmentEstimate'

Example: {'DataSegmentEstimate', 'OperatorCount'}

Path and identifier of project file for which to execute metric results, specified as a cell array of character vectors. The first entry is the full path to a project file. The second entry is the identifier of the object inside the project file.

For a unit model, the first entry is the full path to the model file. The second entry is the name of the block diagram. When you use this argument, the metric engine executes the metrics for the artifacts that trace to specified project file.

Example: {'C:\work\MyModel.slx', 'MyModel'}

Version History

Introduced in R2022a