[vsnet-chat 262] Re: PDM troubles

[Fraser Farrell <fraserf@dove.net.au>]

G'day all,

On 1997-04-23 tkato@kusastro.kyoto-u.ac.jp said:
   >I have examined the paper by Fernie (PASP 101, 225-228 (Feb 1989)).
   >It seems to me this paper describes the treatment only to Fourier
   >transform, and not explicitly applicable to PDM.  The main
   >derivation of the estimate of the error seems to be given in the
   >literature cited in this paper.

Fernie refers to the "Lafler-Kinman class of methods" which includes
string-length and various PDM-type techniques.  All of these are
characterized by a "scatter statistic" vs frequency -type plot; where
the "scatter statistic" falls to a minimum at the correct frequency.

To me, it seems Fernie's method could be used to find the (local)
extremes of any function??



cheers,
Fraser Farrell

http://vsnet.dove.net.au/~fraserf/   email: fraserf@dove.net.au
traditional: PO Box 332, Christies Beach, SA  5165, Australia

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