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 Author Comment/Response yehuda 06/06/13 09:33am Quote: "I have been able to plot the graph..." With the following expression? f(x) = Sin[2Pi*t](1+(1/5)Sin(6Pi*t)+ (1/10)Sin(8Pi*t)) I cannot believe you did!! several issues when working with Mathematica 1. Square brackets for function arguments Sin(6 Pi*t) is the multiplication os Sin with (6 Pi*t) not the Sine of it 2. The (dummy) argument of the function is with an underscore that is, f[x_]:= rathe tan f(x) (which is again multiplication) 3. The name of the dummy argument should appear in the right hand side of the expression. Your "expression" has "x" on the left hand side and t in the right hand side. So, how did you REALLY got your plot I will help you with the rest of your question, since it is more advanced, but to do it you still need to correct the first part you should write f[t_]:=... with all the corrections mentioned above g=Plot[f[t],{t,tmin,tmax}] and decide what are the tmin and tmax that work for you and then p=Cases[g, Line[x_] :> x, Infinity] URL: ,

 Subject (listing for 'Extracting data from a plot of data') Author Date Posted Extracting data from a plot of data Jennifer 06/05/13 2:52pm Re: Extracting data from a plot of data yehuda 06/06/13 09:33am
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