deleteSignals

Delete signals from EDF or EDF+ file

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    Syntax

    edfw = deleteSignals(edfw,signallabels)
    edfw = deleteSignals(edfw)

    Description

    edfw = deleteSignals(edfw,signallabels) deletes the signals specified in signallabels from the European Data Format (EDF) or EDF+ file.

    example

    edfw = deleteSignals(edfw) deletes all the signals from the EDF or EDF+ file.

    Examples

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    Open Live Script

    Load edfw.mat into the workspace. The edfwrite object contains electromyography (EMG) data [1] from eight different arm muscles. To learn more about this data, see Classify Arm Motions Using EMG Signals and Deep Learning. Display the number of signals and the signal labels.

    load edfw
edfw.NumSignals
    ans = 
8

    edfw.SignalLabels
    ans = 8×1 string
    "F1"
    "F2"
    "F3"
    "F4"
    "F5"
    "F6"
    "F7"
    "B1"

    Delete signal B1 from edfw. Display the number of signals and the signal labels.

    edfw = deleteSignals(edfw,"B1");
edfw.NumSignals
    ans = 
7

    edfw.SignalLabels
    ans = 7×1 string
    "F1"
    "F2"
    "F3"
    "F4"
    "F5"
    "F6"
    "F7"

    Input Arguments

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    EDF or EDF+ file, specified as an edfwrite object.

    Signal names, specified as a string vector.

    Data Types: string

    Output Arguments

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    EDF or EDF+ file, returned as an edfwrite object.

    Note

    When a signal is deleted, the recording becomes discontinuous and the Reserved property of the EDF or EDF+ file is converted to EDF+D.

    References

    [1] Chan, Adrian D.C., and Geoffrey C. Green. 2007. "Myoelectric Control Development Toolbox". Paper presented at 30th Conference of the Canadian Medical & Biological Engineering Society, Toronto, Canada, 2007.

    [2] Kemp, Bob, Alpo Värri, Agostinho C. Rosa, Kim D. Nielsen, and John Gade. “A Simple Format for Exchange of Digitized Polygraphic Recordings.” Electroencephalography and Clinical Neurophysiology 82, no. 5 (May 1992): 391–93. https://doi.org/10.1016/0013-4694(92)90009-7.

    [3] Kemp, Bob, and Jesus Olivan. "European Data Format 'plus' (EDF+), an EDF Alike Standard Format for the Exchange of Physiological Data." Clinical Neurophysiology 114, no. 9 (2003): 1755–1761. https://doi.org/10.1016/S1388-2457(03)00123-8.

    Version History

    Introduced in R2021a

    See Also

    Apps

    Objects

    Functions

    External Websites