Skip to main content

fft_r2c

fft_r2c(const RealMatrix input, const List<integer> axes) -> ComplexMatrix​

Real-to-Complex FFT

Performs real-to-complex FFT with default normalization

Parameters​

  • input: Real input matrix (Nx1 for 1D, NxM for 2D)
  • axes: Vector of axes to transform. For 1D (Nx1): use [0]. For 2D (NxM): use [0] for rows, [1] for columns, or [0,1] for full 2D FFT. Output is reduced along last transformed axis.

Returns​

Complex output matrix with reduced size along last transformed axis (N/2+1)