TRANSFORM WAVE

        [CALIBRATE\]TRANSFORM WAVE  FileIn FileOut Direction

    Compute a Wavelet Transform of FileIn along the Frequency/Velocity axis. Di-
    rection indicates if a direct or inverse Wavelet transformation is applied.

    If Direction = 0, the number of channels is extended to the nearest power of
    2, and a direct wavelet transform is performed

    If Direction > 0, an inverse wavelet transform is performed (that assumes  a
    power of 2 in number of channels in FileIn) and the first Direction channels
    only are kept in FileOut.

    Thus,  for  a data cube of Nc channels,  TRANSFORM WAVE In Out 0 followed by
    TRANSFORM WAVE Out In Nc re-creates the original data.