Simulink.sdi.view

R2026b

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 active tab of 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

To open the Simulation Data Inspector, use Simulink.sdi.view.

Simulink.sdi.view

To import data into the Simulation Data Inspector from the workspace, create a Simulink.sdi.Run object using Simulink.sdi.Run.create. Add metadata information 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";

Add the data you created in the workspace to the empty run.

add(sinusoidsRun,"vars",sine_ts,cos_ts);
 0.091530s wall, 0.156250s user + 0.031250s system = 0.187500s CPU (204.9%)

Plot Data in Simulation Data Inspector

To access the Simulink.sdi.Signal object corresponding to each signal, use getSignalByIndex. 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. For example, 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 = "--";

To configure a 2-by-1 subplot layout in the active tab of the Simulation Data Inspector plotting area, use Simulink.sdi.setSubPlotLayout. To plot the sine signal on the upper subplot and the cosine signal on the lower subplot, use plotOnSubPlot.

Simulink.sdi.setSubPlotLayout(2,1);

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

A 2-by-1 subplot layout for Tab1 in the Simulation Data Inspector. The sine signal is plotted in the upper subplot and the cosine signal is plotted in the lower subplot.

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)

The Simulation Data Inspector with a cursor positioned at 6 seconds in Tab1. The cursor is applied to both subplots.

To measure the time difference between two points or extract descriptive statistics within the defined interval, add two cursors.

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

The Simulation Data Inspector with two cursors positioned at 5 seconds and 7 seconds in Tab1.

Determine 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