Package edu.emory.mathcs.jtransforms.fft

Examples of edu.emory.mathcs.jtransforms.fft.DoubleFFT_1D.complexForward()

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      array[i*2+1] = x.getElementAsComplex(i).getImaginary();
    }
    if(inverse) {
      fft.complexInverse(array, false);
    } else {
      fft.complexForward(array);
    }
    return toComplex(array);
  }
 
  private static ComplexVector realFFT(Vector x, boolean inverse) {
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        DoubleFFT_1D fourierTransform = new DoubleFFT_1D(numberOfSamples);
        //ComplexArray specElement;
        for (int i = 0; i < numberOfTraces; i++) {
                 double[] interleaved = this.fid[i].toDoubleArray(
                                ComplexArray.reductionMode.INTERLEAVED);
               fourierTransform.complexForward(interleaved);
               ComplexArray tmp = new ComplexArray(numberOfSamples);
               tmp.setInterleavedDoubles(interleaved);
               this.spec[i] = tmp.circShift().clone();
           
        }
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            //The number of coefficients for the FFT
            int transformLength = coef.length / 2;  // N real, imag pairs

            // Perform the FFT. Values are placed back in coef[].
            DoubleFFT_1D fft = new DoubleFFT_1D(transformLength);
            fft.complexForward(coef);

            // Swap the left/right halves of the output array
            // to get the negative freqs into the proper place.
            for (int i = 0; i < transformLength; ++i)
            {
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    DoubleFFT_1D fft = CACHE_1D.get(n);
    if (fft == null) {
      fft = new DoubleFFT_1D(n);
      CACHE_1D.put(n, fft);
    }
    fft.complexForward(a);
    return unpackFull(a);
  }

  /**
   * The inverse (backward) discrete Fourier transform. *Note:* In this
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