comp.lang.idl-pvwave archive: archive » BUG IN C

Home » Public Forums » archive » BUG IN C_CORRELATE

Show: Today's Messages :: Show Polls :: Message Navigator
E-mail to friend

BUG IN C_CORRELATE [message #5651]

Wed, 31 January 1996 00:00

Jack Saba
Messages: 30
Registered: January 1996

Member

There appears to be a bug in c_correlate. The documentation says
the sums in the denominator go from 0 --> N-1. However, as
implemented, they go from 0 --> N-2. The same seems to be the
case for a_correlate.

I'm not an expert on correlation analysis, but the definition of
the cross-correlation in these functions strikes me as odd. The
use of the entire vector in the denominator means that the
cross-correlation at large lag is decreased wrt smaller lags
because more elements of the vector are used in the denominator
than in the numerator. Is this the normal definition, or should
the sums in the denominator include only the elements that are
are used in the numerator?

Report message to a moderator

[Message index]

		BUG IN C_CORRELATE By: Jack Saba on Wed, 31 January 1996 00:00
		Re: BUG IN C_CORRELATE By: sogawa on Thu, 01 February 1996 00:00

Previous Topic:	Maker Interchange Format (MIF) driver Version 1.03
Next Topic:	Problem addressing arrays from C routines running OSF

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

] [

]

Current Time: Sun Nov 30 15:18:42 PST 2025

Total time taken to generate the page: 1.20240 seconds