Simulink.sdi.view

Open the Simulation Data Inspector

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Syntax

Simulink.sdi.view
Simulink.sdi.view(pane)

Description

Simulink.sdi.view opens the Simulation Data Inspector. You can write a script to plot your data and customize the Simulation Data Inspector properties and then use Simulink.sdi.view to see the results.

example

Simulink.sdi.view(pane) opens the Simulation Data Inspector to the Inspect pane or the Compare pane.

Examples

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You can open the Simulation Data Inspector programmatically to visualize, inspect, and analyze your data.

Simulink.sdi.view
Open Live Script

Create a run, add data to it, and then view the data in the Simulation Data Inspector.

Create Data for Run

Create two timeseries objects to contain data for a sine signal and a cosine signal. Give each timeseries object a descriptive name.

time = linspace(0,20,101);

sine_vals = sin(2*pi/5*time);
sine_ts = timeseries(sine_vals,time);
sine_ts.Name = "Sine, T=5";

cos_vals = cos(2*pi/8*time);
cos_ts = timeseries(cos_vals,time);
cos_ts.Name = "Cosine, T=8";

Create Run and Add Data

Use the Simulink.sdi.view function to open the Simulation Data Inspector.

Simulink.sdi.view

To import data into the Simulation Data Inspector from the workspace, create a Simulink.sdi.Run object using the Simulink.sdi.Run.create function. Add information about the run to its metadata using the Name and Description properties of the Run object.

sinusoidsRun = Simulink.sdi.Run.create;
sinusoidsRun.Name = "Sinusoids";
sinusoidsRun.Description = "Sine and cosine signals with different frequencies";

Use the add function to add the data you created in the workspace to the empty run.

add(sinusoidsRun,"vars",sine_ts,cos_ts);

Plot Data in Simulation Data Inspector

Use the getSignalByIndex function to access Simulink.sdi.Signal objects that contain the signal data. You can use the Simulink.sdi.Signal object properties to specify the line style and color for the signal and plot the signal in the Simulation Data Inspector. Specify the LineColor and LineDashed properties for each signal.

sine_sig = getSignalByIndex(sinusoidsRun,1);
sine_sig.LineColor = [0 0 1];
sine_sig.LineDashed = "-.";

cos_sig = sinusoidsRun.getSignalByIndex(2);
cos_sig.LineColor = [1 0 0];
cos_sig.LineDashed = "--";

Use the Simulink.sdi.setSubPlotLayout function to configure a 2-by-1 subplot layout in the Simulation Data Inspector plotting area. Then, use the plotOnSubplot function to plot the sine signal on the top subplot and the cosine signal on the lower subplot.

Simulink.sdi.setSubPlotLayout(2,1);

plotOnSubPlot(sine_sig,1,1,true);
plotOnSubPlot(cos_sig,2,1,true);

Inspect Data Using Cursors

To access the value of a signal at a specific time, you can add a cursor to the plot. For example the Sine signal appears to have a local maximum at about 6 seconds. Add one cursor to the plot and observe the signal value at 6 seconds.

Simulink.sdi.setNumCursors(1)
Simulink.sdi.setCursorPositions("left",6)

Place two cursors on a plot to measure the time difference between two points or extract descriptive statistics within the defined interval.

Simulink.sdi.setNumCursors(2)
Simulink.sdi.setCursorPositions("left",5,"right",7)

Determine the value of the local maximum sample value in the Sine signal between the cursors using the max function. 

[t1,t2] = Simulink.sdi.getCursorPositions;
localMax = max(sine_sig,t1,t2)
localMax = 
0.9980

Close Simulation Data Inspector and Save Data

When you finish inspecting the plotted signal data, you can close the Simulation Data Inspector and save the session to an MLDATX file.

Simulink.sdi.close("sinusoids.mldatx")

Input Arguments

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Option to inspect or compare data, specified as one of these options:

  • Simulink.sdi.GUITabType.InspectSignals — Open the Simulation Data Inspector to the Inspect pane.

  • Simulink.sdi.GUITabType.CompareRuns — Opens the Simulation Data Inspector to the Compare pane.

Alternatives

You can open the Simulation Data Inspector from the Simulink® Editor toolbar with the Simulation Data Inspector button .

Version History

Introduced in R2011b

See Also

Functions

Tools

Topics