ManagedFft2D.ForwardTransform Method

Definition

Namespace: Numerics.NET.SignalProcessing
Assembly: Numerics.NET (in Numerics.NET.dll) Version: 10.8.0

Overload List

ForwardTransform(Matrix<T>) 
ForwardTransform<TStorage2D, TComplexStorage2D>(TStorage2D, Array2D<Complex<T>>) 
ForwardTransform(Matrix<T>, Matrix<Complex<T>>) 
ForwardTransform(ReadOnlySpan2D<T>, Span2D<Complex<T>>) 
ForwardTransform(Matrix<T>) Computes the discrete Fourier transform of a real signal and returns the result.
ForwardTransform(DenseMatrix<T>, ComplexConjugateSignalMatrix<T>) Computes the discrete Fourier transform of a real signal.
ForwardTransform(DenseMatrix<Complex<T>>, DenseMatrix<Complex<T>>) Computes the discrete Fourier transform of a complex signal.
ForwardTransform(Matrix<T>, Matrix<Complex<T>>) Computes the discrete Fourier transform of a real signal.
ForwardTransform(ReadOnlySpan2D<T>, Span2D<Complex<T>>) Computes the discrete Fourier transform of a real signal.
ForwardTransform(Matrix<T>, Matrix<Complex<T>>, RealFftFormat) Computes the discrete Fourier transform of a real signal.
ForwardTransform(ReadOnlySpan<Complex<Double>>, Int32, Span<Complex<Double>>, Int32) Computes the discrete Fourier transform of a real signal.
ForwardTransform(ReadOnlySpan<Double>, Int32, Span<Complex<Double>>, Int32) Computes the discrete Fourier transform of a real signal.
ForwardTransform<TStorage2D, TComplexStorage2D>(TStorage2D, Array2D<Complex<T>>) Computes the discrete Fourier transform of a real signal.

ForwardTransform(ReadOnlySpan<Complex<Double>>, Int32, Span<Complex<Double>>, Int32)

Computes the discrete Fourier transform of a real signal.
C# 
public override void ForwardTransform(
	ReadOnlySpan<Complex<double>> input,
	int inputLeadingDimension,
	Span<Complex<double>> output,
	int outputLeadingDimension
)

Parameters

input  ReadOnlySpan<Complex<Double>>
A span containing a real 2D array containing the input signal.
inputLeadingDimension  Int32
The number of elements between the start of successive columns in input.
output  Span<Complex<Double>>
A span containing a complex 2D array to hold the transformed signal.
outputLeadingDimension  Int32
The number of elements between the start of successive columns in output.

Remarks

The output is stored in a compact format to take advantage of the symmetry properties of a real Fourier transform. Specifically, for a transform with rowCount rows and columnCount columns, output has rowCount rows and columnCount / 2 + 1 columns.

Exceptions

InvalidOperationException

The Fourier transform implementation is not configured to accept real input.

ForwardTransform(ReadOnlySpan<Double>, Int32, Span<Complex<Double>>, Int32)

Computes the discrete Fourier transform of a real signal.
C# 
public override void ForwardTransform(
	ReadOnlySpan<double> input,
	int inputLeadingDimension,
	Span<Complex<double>> output,
	int outputLeadingDimension
)

Parameters

input  ReadOnlySpan<Double>
A span containing a real 2D array containing the input signal.
inputLeadingDimension  Int32
The number of elements between the start of successive columns in input.
output  Span<Complex<Double>>
A span containing a complex 2D array to hold the transformed signal.
outputLeadingDimension  Int32
The number of elements between the start of successive columns in output.

Remarks

The output is stored in a compact format to take advantage of the symmetry properties of a real Fourier transform. Specifically, for a transform with rowCount rows and columnCount columns, output has rowCount rows and columnCount / 2 + 1 columns.

Exceptions

InvalidOperationException

The Fourier transform implementation is not configured to accept real input.

See Also