MathGroup Archive: September 2007 [00163]

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Log of y-axis data?

To: mathgroup at smc.vnet.net
Subject: [mg80980] Log of y-axis data?
From: efifer at fas.harvard.edu
Date: Thu, 6 Sep 2007 05:41:17 -0400 (EDT)


Hi,

I was wondering if someone could help me create a graph that takes the Log of
the y-axis data (which is Fourier of my data list). To clarify....

My original graph is as follows:

ListPlot[Log[Abs[Fourier[
    data]]], PlotJoined -> True, PlotRange -> {{0, 10000}, {0, 5}}]

Where data is :

data = Table[Sum[ampout[i]*Sin[(2.*&#960;*freq[i])*t], {i,
        1, 18}], {t, 0, 1, .0001}]


Thanks!

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