[Users] Spectral Decomposition improvements

[Paul de Groot]

Dear OpendTect users,

As communicated via the announce mailing list OpendTect v2.0.2 has been 
offiicially released as of today. Herewith, I would like to describe the 
main improvements made to Spectral Decompostion:

   1. Both algorithms (FFT and CWT) have increased in speed.
   2. CWT specifications are done in terms of (dominant) frequencies
      rather than wavelet scales.
   3. Spectral decomposition of a horizon slice can now be saved and
      retrieved as follows:
         1. Add a horizon to the tree and select this as the current
            visualization element.
         2. Open the Attribute Set window and create (select) a Spectral
            Decomposition attribute.
         3. Press the "Evaluate attribute" icon in the Attribute Set
            window and specify the number of frequencies to calculate.
            Use the slider to inspect the results movie-style. Switch
            the "Store slices on Accept" toggle on and press Accept to
            return to the Attribute Set window. The parameters are
            updated to the slice that you accepted as output value. The
            slices are saved as "SpecDecomp - Frequency [N]" slices
            under the horizon.
         4. To retrieve slices at a later date: add the horizon to the
            tree. Right click on the Horizon and select the Surface data
            sub-menu. Select the slices you want to load. Use "Page Up"
            and "Page Down" keys to switch to the next slice
            movie-style. Note that the name in the tree shows which
            slice is being displayed.

These new features should make life easier as far as Spectral 
Decomposition is concerned. I would like to take this opportunity to 
thank everbody for their support this year and to wish you all a Happy 
Holiday Season and a Prosperous New Year.

Best regards,

Paul de Groot.

-- 
-- Paul de Groot
-- OpendTect Support Team
-- paul.degroot at opendtect.org
-- http://www.opendtect.org
-- Tel: +31 534315155 , Fax: +31 534315104