specx_anal bug

From: Dennis Shea (shea AT XXXXXX)
Date: Mon Apr 05 2004 - 09:52:02 MDT

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    Two users called attention to the output from specx_anal when
    iopt=1 [remove linear trend prior to computing the spectrum].
    The resulting spectrum exhibited large spectral estimates
    at the very lowest frequencies.

    The appropriate 'fix' will be included in v032.

    ---
    In the mean time, if the user wants to detrend the series
    prior to computing the spectrum, use NCL's "dtrend" function:
    

    http://ngwww.ucar.edu/ngdoc/ng/ref/ncl/functions/dtrend.html

    prior to invoking "specx_anal"

    EG:

    yDetrend = dtrend (y,False) ; remove linear trend iopt = 0 ; set internal detrend option to zero dof = specx_anal (yDetrend,iopt,jave,pct)

    --- Sorry

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