Re: Log of y-axis data?

*To*: mathgroup at smc.vnet.net*Subject*: [mg81010] Re: Log of y-axis data?*From*: Jean-Marc Gulliet <jeanmarc.gulliet at gmail.com>*Date*: Fri, 7 Sep 2007 02:15:52 -0400 (EDT)*Organization*: The Open University, Milton Keynes, UK*References*: <fbojsv$jg0$1@smc.vnet.net>

efifer at fas.harvard.edu wrote: > 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.*π*freq[i])*t], {i, > 1, 18}], {t, 0, 1, .0001}] I believe that what you are looking for is the function *LinearLogListPlot*, for version 5, or *ListLogPlot*, for version 6. For instance, (* Mathematica Version # < 6.0 *) Needs["Graphics`Graphics`"] LinearLogListPlot[10^Range[10], PlotStyle -> PointSize[0.02]]; (* Mathematica Version # >= 6.0 *) ListLogPlot[10^Range[10], PlotStyle -> PointSize[0.02]] -- Jean-Marc