shuffle

Shuffle files in datastore

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Syntax

shuffledADS = shuffle(ADS)

Description

shuffledADS = shuffle(ADS) creates a deep copy of the input datastore, ADS, and shuffles the files using randperm.

Examples

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Open Live Script

Create an audioDatastore object ADS. Shuffle the files to create a new datastore containing the same files in random order.

ADS = audioDatastore(fullfile(matlabroot,'toolbox','audio','samples'))
ADS = 
  audioDatastore with properties:

                       Files: {
                              ' .../matlab/toolbox/audio/samples/Ambiance-16-44p1-mono-12secs.wav';
                              ' .../matlab/toolbox/audio/samples/AudioArray-16-16-4channels-20secs.wav';
                              ' .../toolbox/audio/samples/ChurchImpulseResponse-16-44p1-mono-5secs.wav'
                               ... and 36 more
                              }
                     Folders: {
                              ' .../Bdoc25b.2988451/build/runnable/matlab/toolbox/audio/samples'
                              }
    AlternateFileSystemRoots: {}
              OutputDataType: 'double'
           OutputEnvironment: 'cpu'
                      Labels: {}
      SupportedOutputFormats: ["wav"    "flac"    "ogg"    "opus"    "mp3"    "mp4"    "m4a"]
         DefaultOutputFormat: "wav"


ADSshuffled = shuffle(ADS)
ADSshuffled = 
  audioDatastore with properties:

                       Files: {
                              ' .../matlab/toolbox/audio/samples/TrainWhistle-16-44p1-mono-9secs.wav';
                              ' .../runnable/matlab/toolbox/audio/samples/Rainbow-16-8-mono-114secs.wav';
                              ' .../runnable/matlab/toolbox/audio/samples/Turbine-16-44p1-mono-22secs.wav'
                               ... and 36 more
                              }
                     Folders: {
                              ' .../Bdoc25b.2988451/build/runnable/matlab/toolbox/audio/samples'
                              }
    AlternateFileSystemRoots: {}
              OutputDataType: 'double'
           OutputEnvironment: 'cpu'
                      Labels: {}
      SupportedOutputFormats: ["wav"    "flac"    "ogg"    "opus"    "mp3"    "mp4"    "m4a"]
         DefaultOutputFormat: "wav"

Input Arguments

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Input audio datastore, specified as an audioDatastore object.

Output Arguments

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Shuffled audio datastore, returned as an audioDatastore object containing randomly ordered files from ADS.

Version History

Introduced in R2018b

See Also

Topics