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Posted: **Tue Jan 11, 2011 8:35 am**

Hi everyone,
I am trying to find a procedure to find peaks and troughs dates in a time series with eviews.
It should be something like the Bry and Boschan routine which i found but only in Rats and it would take me quite a bit of time to reproduce in eviews.
Has anyone already dealt with this problem?
Thanks
M.

Posted: **Tue Jan 11, 2011 9:10 am**

I'm not familiar with that paper, but is the following not a solution?

Code: Select all


'With y the original data series

'Finds maxima
series max = @recode(y>y(-1) and y>y(+1),y,na)

'Finds minima
series min= @recode(y<y(-1) and y<y(+1),y,na)

Regards,

Javier

Posted: **Tue Jan 11, 2011 10:24 am**

I think that will do, it was so easy!
thanks a LOT!
m.

Posted: **Wed Jan 12, 2011 12:43 am**

Bry-Boschan routine is a non-parametric Business Cycle Dating Algorithm that identifies peaks and troughs. The code above, as noted by javiersan, only finds maxima and minima and therefore should not be considered as a substitute.

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Peak and trough dates

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