Specify a Sytem of Units

By default, the Simulation Data Inspector displays signals using the units assigned to the signal during simulation or in the imported data. To facilitate analyzing multiple signals and data sets together, you can specify a system of units as a preference. The Simulation Data Inspector automatically updates the Display Units for logged or imported signals that use units that are invalid in the specified unit system. For example, a signal logged in a model using units of ft could be updated to use units of m when the system of units is specified as SI.

Use the Simulink.sdi.setUnitSystem function to configure the Simulation Data Inspector to display signals using units in the US Customary unit system.

Simulink.sdi.setUnitSystem('USCustomary');

Specify Override Units

When you want all signals that represent the same type of measurement to use the same Display Units, you can also specify override units. For example, to plot all signals that represent length using units of ft, specify ft as an override unit.

Simulink.sdi.setUnitSystem('USCustomary','Overrides',"ft");

Check Unit Configuration

Use the Simulink.sdi.getUnitSystem function to check the current unit preferences configured in the Simulation Data Inspector.

[unitSystem,overrideUnits] = Simulink.sdi.getUnitSystem

unitSystem = 
'USCustomary'

overrideUnits = 
"ft"