Table Of Contents

Statistics (G Dataflow)

Version:
    Last Modified: March 31, 2017

    Performs statistical calculations on a signal.

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    signal

    The input signal.

    This input supports the following data types:

    • Waveform
    • Array of waveforms
    • 1D array of double-precision, floating-point numbers
    • 2D array of double-precision, floating-point numbers
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    error in

    Error conditions that occur before this node runs.

    The node responds to this input according to standard error behavior.

    Standard Error Behavior

    Many nodes provide an error in input and an error out output so that the node can respond to and communicate errors that occur while code is running. The value of error in specifies whether an error occurred before the node runs. Most nodes respond to values of error in in a standard, predictable way.

    error in does not contain an error error in contains an error
    If no error occurred before the node runs, the node begins execution normally.

    If no error occurs while the node runs, it returns no error. If an error does occur while the node runs, it returns that error information as error out.

    If an error occurred before the node runs, the node does not execute. Instead, it returns the error in value as error out.

    Default: No error

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    median

    Median value in the input signal.

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    mode

    Estimated mode of the input signal.

    Algorithm for Calculating mode

    This node uses a histogram to divide the input signal range into 100 equally-spaced bins, or intervals. mode is the center value of the bin that contains the most values from the input signal.

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    mean

    Average of the values in the input signal.

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    standard deviation

    Standard deviation of the values in the input signal.

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    variance

    Variance of the values in the input signal.

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    error out

    Error information.

    The node produces this output according to standard error behavior.

    Standard Error Behavior

    Many nodes provide an error in input and an error out output so that the node can respond to and communicate errors that occur while code is running. The value of error in specifies whether an error occurred before the node runs. Most nodes respond to values of error in in a standard, predictable way.

    error in does not contain an error error in contains an error
    If no error occurred before the node runs, the node begins execution normally.

    If no error occurs while the node runs, it returns no error. If an error does occur while the node runs, it returns that error information as error out.

    If an error occurred before the node runs, the node does not execute. Instead, it returns the error in value as error out.
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    IQR

    Interquartile range in the input signal. Because the IQR is computed as the difference between the 25th and 75th percentile, this measure of spread is more resistive to outliers than other measures.

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    range

    Difference in the minimum and maximum values of the input signal.

    Where This Node Can Run:

    Desktop OS: Windows

    FPGA: DAQExpress does not support FPGA devices


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