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getLabeledSignal

Get labeled signals from labeled signal set

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Syntax

[t,info] = getLabeledSignal(lss)
[t,info] = getLabeledSignal(lss,midx)

Description

[t,info] = getLabeledSignal(lss) returns a table with all the signals and labeled data in the labeled signal set lss.

example

[t,info] = getLabeledSignal(lss,midx) returns a table with the signals specified in midx.

Examples

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Open Live Script

Load a labeled signal set containing recordings of whale songs. 

load whales
lss
lss = 
  labeledSignalSet with properties:

             Source: {2x1 cell}
         NumMembers: 2
    TimeInformation: "sampleRate"
         SampleRate: 4000
             Labels: [2x3 table]
        Description: "Characterize wave song regions"

 Use labelDefinitionsHierarchy to see a list of labels and sublabels.
 Use setLabelValue to add data to the set.

Get a table with all the signals in lss.

t = getLabeledSignal(lss)
t=2×4 table
                      Signal         WhaleType    MoanRegions    TrillRegions
                 ________________    _________    ___________    ____________

    Member{1}    {79572x1 double}      blue       {3x2 table}    {1x3 table} 
    Member{2}    {76579x1 double}      blue       {3x2 table}    {1x3 table}

Identify the sublabels of the trill regions.

d = getLabelNames(lss,"TrillRegions")
d = 
"TrillPeaks"

Get the labeled signal corresponding to the second member of the set. Determine the sample rate.

idx = 2;

[lbs,info] = getLabeledSignal(lss,idx)
lbs=1×4 table
                      Signal         WhaleType    MoanRegions    TrillRegions
                 ________________    _________    ___________    ____________

    Member{2}    {76579x1 double}      blue       {3x2 table}    {1x3 table} 


info = struct with fields:
    TimeInformation: "sampleRate"
         SampleRate: 4000


fs = info.SampleRate;

Identify the moan and trill regions of interest. Use a signalMask (Signal Processing Toolbox) object to plot the signal and highlight the moans and trills.

mvals = getLabelValues(lss,idx,"MoanRegions");
tvals = getLabelValues(lss,idx,"TrillRegions");

tb = [mvals;tvals];
tb.Value = categorical([repmat("moan",height(mvals),1); ...
    repmat("trill",height(tvals),1)],["moan" "trill"]);
sm = signalMask(tb,"SampleRate",fs);
plotsigroi(sm,getSignal(lss,idx))

Figure contains an axes object. The axes object with xlabel Seconds contains 3 objects of type line.

Identify three peaks of the trill region and plot them.

peaks = getLabelValues(lss,idx,["TrillRegions" "TrillPeaks"]);

hold on
pk = plot(peaks.Location,cell2mat(peaks.Value),"v");
hold off
legend(pk,"trill peaks")

Figure contains an axes object. The axes object with xlabel Seconds contains 4 objects of type line. One or more of the lines displays its values using only markers This object represents trill peaks.

Input Arguments

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Labeled signal set, specified as a labeledSignalSet object.

Example: labeledSignalSet({randn(100,1) randn(10,1)},signalLabelDefinition('female')) specifies a two-member set of random signals containing the attribute 'female'.

Member row number, specified as a positive integer. midx specifies the member row number as it appears in the Labels table of a labeled signal set.

Output Arguments

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Labeled signal, specified as a table.

Time information, returned as a structure.

Version History

Introduced in R2018b

See Also

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