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Interpolate 1D Fourier (G Dataflow)

Version:
    Last Modified: January 9, 2017

    Performs one-dimensional Fourier interpolation. This node transforms an array of tabulated values into the frequency domain, zero-pads and scales the array appropriately for the interpolation factor you want to maintain correct symmetry in the frequency domain, and then transforms back into the time domain to form the output interpolated array.

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    X

    Tabulated values to be interpolated.

    It is assumed that the data in X are equally spaced samples along its x-axis.

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    n

    Interpolation size or interpolation factor.

    n is determined by the setting of type.

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    dt in

    The sampling interval.

    This node computes dt out depending on dt in and the interpolation settings n and type.

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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.

    Default: No error

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    type

    Method for determining the size of the interpolated output array.

    Name Value Description
    interpolation size 0 Output size = n
    interpolation factor 1 Output size = n * size of X

    Default: interpolation factor

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    Y

    Output array of interpolated values.

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    interpolation size

    Size of the interpolated output array.

    If type is interpolation size, interpolation size returns n. If type is interpolation factor, interpolation size returns n * size of X.

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    dt out

    The sampling interval of the output array.

    This output returns dt in * N/m, where N is the size of X, and m is the interpolation size (determined by n and type).

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    error out

    Error information. The node produces this output according to standard error behavior.

    Where This Node Can Run:

    Desktop OS: Windows

    FPGA: Not supported


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