Class: Simulink.sdi.Signal
Package: Simulink.sdi

Plot signal on specified sub-plot




signalObj.plotOnSubplot(r,c,checked) plots or clears the signal corresponding to the Simulink.sdi.Signal object, sigObj, on the sub-plot specified by r and c.

Input Arguments

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Row index for the sub-plot.

Example: 1

Column index for the sub-plot.

Example: 2

Desired state for signal on sub-plot.

  • true plots the signal on the sub-plot.

  • false clears the signal from the sub-plot.

Data Types: logical


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This example demonstrates how to access the Simulink.sdi.Run object for a Simulation Data Inspector run created by logging signals. From the Simulink.sdi.Run object you can get Simulink.sdi.Signal objects that you can use to plot the data.

Create a Simulation Run and Access the Run Object

The sldemo_fuelsys model includes several signals that are marked for logging. To create a simulation run containing the logged data, simulate the model.


The Simulation Data Inspector keeps track of runs by assigning each run created by simulation, importing data, or opening a session a unique numeric ID. To access the run object for the simulation just performed, use the Simulink.sdi.getAllRunIDs function and take the last run ID in the returned vector.

runIDs = Simulink.sdi.getAllRunIDs;
runID = runIDs(end);

Once you have the run ID for the run of interest, you can use the Simulink.sdi.getRun function to get the Simulink.sdi.Run object corresponding to the run. You can use the Run object to check metadata associated with the run, including the number of signals in the run.

vdpRun = Simulink.sdi.getRun(runID);

ans = int32

Plot Data Using Signal Objects

Use the getSignalByIndex function to access signals of interest from the Run object, fuelRun.

signal1 = getSignalByIndex(vdpRun,1);
signal2 = getSignalByIndex(vdpRun,2);

Use the Simulink.sdi.setSubPlotLayout function to specify a 3-by-1 layout.


Before plotting the data, use the Simulink.sdi.clearAllSubPlots function to clear any data that is already plotted.


Plot one signal on each subplot. To plot signals on the first subplot, you can set the checked property for the signal. To plot signals on subplots other than the first subplot, use the plotOnSubPlot function.

signal1.Checked = true;

View the Plotted Data

To view the plots you just created, open the Simulation Data Inspector using the Simulink.sdi.view function.


You can use the Simulation Data Inspector GUI to modify your plot layout and where you plot signals. For more information, see Inspect Simulation Data.

Introduced in R2017b