V.18:7 (8-16):Letters to S&C

The editors of S&C invite readers to submit their opinions and information on subjects relating to technical analysis and this magazine. This column is our means of communication with our readers. Is there something you would like to know more (or less) about? Tell us about it. Without a source of new ideas and subjects coming from our readers, this magazine would not exist.

Address your correspondence to: Editor, STOCKS & COMMODITIES, 4757 California Ave. SW, Seattle, WA 98116-4499, or E-mail to editor@Traders.com. Letter-writers must include their full name and address for verification. Letters may be edited for length or clarity. All letters become the property of Technical Analysis, Inc. The opinions expressed in this column do not necessarily represent those of the magazine. —Editor

HILBERT INDICATORS

Editor,

Although I’m not a mathematician, my appetite for indicators was stimulated by John Ehlers’s March 2000 S&C article, "Hilbert Indicators Tell You When To Trade." Thanks to the lucid explanation of lag elimination in exponential moving averages, I have been able to apply the technique to the Lotus 1-2-3 spreadsheets that I use for stock charting.

However, a similar application of the Hilbert transform to identifying cycles within a historical stock-data string eludes me. I confess to not possessing a program that uses EasyLanguage and ask if you can refer me to a suitable article detailing the use of the transform with a spreadsheet. I may say I am averse to taking a black-box approach when it comes to generating indicators.

TREVOR BESTOW, via E-mail Roleystone, Australia

Thank you for writing. Sorry, we haven't published an article on the Hilbert transform with a spreadsheet approach. See also the next letter. —Editor