Re: fourier ( FFT )
- To: mathgroup at smc.vnet.net
- Subject: [mg52108] Re: fourier ( FFT )
- From: "Jens-Peer Kuska" <kuska at informatik.uni-leipzig.de>
- Date: Thu, 11 Nov 2004 04:52:10 -0500 (EST)
- Organization: Uni Leipzig
- References: <cmso6o$b4g$1@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
Hi, Fourier[] assume that your data equaly spaced sampled on the interval [0,2Pi). You can construct an interpolation function and resample the data. Regards Jens <bar at ANTYSPAM.ap.krakow.pl> schrieb im Newsbeitrag news:cmso6o$b4g$1 at smc.vnet.net... > Hi > > My file has form: > x1 f(x1) > x2 f(x2) .... > > How can I use Mathematica to obtain frequencies ? > > Fourier[] works on only one list! > > When i tested with f(x)=Sin[a x] sometimes > i obtained wrong result. > > > regards, Olaf >