getElement

Class: Simulink.sdi.DatasetRef
Package: Simulink.sdi

Retrieve DatasetRef element by index

Syntax

[element, name, index] = SDIdatasetRef.getElement(index)

Description

[element, name, index] = SDIdatasetRef.getElement(index) returns the element within the Run in the Simulink.sdi.DatasetRef object at the specified index.

Input Arguments

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Location of the element in the Simulink.sdi.DatasetRef object.

Output Arguments

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Element from the run in the Simulink.sdi.DatasetRef object.

Name of the element retrieved from the Simulink.sdi.DatasetRef object.

Location of the element within the Simulink.sdi.DatasetRef object.

Examples

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This example shows how to work with the Simulink.sdi.DatasetRef object by comparing two runs of the ex_sldemo_absbrake system with different desired slip ratios.

% Simulate model ex_sldemo_absbrake to create a run of logged signals
load_system('ex_sldemo_absbrake')
sim('ex_sldemo_absbrake')

% Get the runID
runIDs = Simulink.sdi.getAllRunIDs;
runID = runIDs(end);

% Get the run object
brakeRun = Simulink.sdi.getRun(runID);

% Make a Simulink.sdi.DatasetRef object
run_DSRef = brakeRun.getDatasetRef;

% Get the names of the elements in the object
names = run_DSRef.getElementNames
names = 2x1 cell array
    {'yout'}
    {'slp' }

% Get yout bus
[yout, name, index] = run_DSRef.getElement(1);

% View signals in outputs
outputs = yout.Values
outputs = struct with fields:
    Ww: [1x1 timeseries]
    Vs: [1x1 timeseries]
    Sd: [1x1 timeseries]

% Get slp signal
slp = run_DSRef.getSignal('slp');

% Plot signal
slp.Checked = 'true';
% Create another run for a different Desired relative slip
set_param('ex_sldemo_absbrake/Desired relative slip', 'Value', '0.25')
sim('ex_sldemo_absbrake')
DSR_Runs = Simulink.sdi.DatasetRef;

% Compare the results from the two runs
[matches, mismatches, diffResult] = run_DSRef.compare(DSR_Runs(2));

% Open the Simulation Data Inspector to view signals
run_DSRef.plot

Introduced in R2017b