Trigonometric Regression

[Gaurav Dhamija]

Dear All,

I want to do Trigonometric Regression to find the coefficient of cyclic variation to measure the seasonality in the data set. It would be great if you can suggest some source to understand how I can work this out on STATA?

Your reply is eagerly awaited.
Thank you.

[Nick Cox]

You can use search in Stata with keywords:

search for trigonometric regression                                                    (manual:  [R] search)
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Search of official help files, FAQs, Examples, SJs, and STBs

SJ-6-4  st0116  . . . .  Speaking Stata: In praise of trigonometric predictors
        . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  N. J. Cox
        Q4/06   SJ 6(4):561--579                                 (no commands)
        discusses the use of sine and cosine as predictors in
        modeling periodic time series and other kinds of periodic
        responses

doing that yourself will yield a clickable link.

[Gaurav Dhamija]

Thank you, Sir.