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discrete Fourier transform

• To: mathgroup at smc.vnet.net
• Subject: [mg121051] discrete Fourier transform
• From: tarun dutta <tarunduttaz at gmail.com>
• Date: Thu, 25 Aug 2011 07:05:08 -0400 (EDT)
• Delivered-to: l-mathgroup@mail-archive0.wolfram.com

I have a text file (in my desktop)in which there are two columns one
is time and another is the result as
0   0.956
2   0.265
...................etc
now I have to plot the data after doing discrete fourier transform of
this data.how will I do that ?
I used

data=Import["output.txt", "Table"]
pt=Fourier[data]
ListLinePlot[pt]
but itz not working.can any one help me by giving a solution.
regards,
tarun

• Follow-Ups:
  • Re: discrete Fourier transform
    • From: Daniel Lichtblau <danl@wolfram.com>