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Jun
15
awarded  Notable Question
May
6
comment NonlinearModelFit and plot with multiple parameters function
Let us continue this discussion in chat.
May
6
comment NonlinearModelFit and plot with multiple parameters function
The error does not occur for me. Maybe start with a fresh kernel (new mathematica session)? Maybe you are using some of the variables somewhere else...
May
6
comment NonlinearModelFit and plot with multiple parameters function
Also you can plot f(t) and the f(t) according to the fit using the residuals, if that's what you need instead of just the quality of the fit.
May
6
comment NonlinearModelFit and plot with multiple parameters function
Where did you get this error? Does it work with the data you posted here?
May
6
answered NonlinearModelFit and plot with multiple parameters function
May
6
comment NonlinearModelFit and plot with multiple parameters function
do you know what kind of functions a(t) and b(t) are?
Mar
14
awarded  Enlightened
Mar
14
awarded  Nice Answer
Aug
8
awarded  Yearling
Aug
5
revised How to visualize 3D fit
deleted 2 characters in body
Apr
11
comment How to solve correctly inside a DO loop and then plot
sure, I just didn't want to obfuscate the important changes, that help to solve the main problem.
Apr
10
revised How to solve correctly inside a DO loop and then plot
clean up
Apr
10
revised How to solve correctly inside a DO loop and then plot
clean up
Apr
10
revised How to solve correctly inside a DO loop and then plot
clean up
Apr
10
answered How to solve correctly inside a DO loop and then plot
Apr
7
comment Plotting Fourier spectrum versus frequency of a signal
For startes you should use FourierDST - the discrete sine transform. But the peak's position still depends on the sample size.
Mar
8
comment Simulation code performance tuning
Is there some very specific function of Mathematica that you are using? It looks like a lot of loops with rather simple math in them. Here I would suggest not to use Mathematica if performance and scalability matters. In my experience you can speed up programs by roughly a factor of 1000 (non optimized Mathematica) if you switch to C/C++. Even when you optimize your code you wont reach that performance with Mathematica.
Jan
8
revised Implementing efficient multiple undo
added 107 characters in body
Jan
8
revised Implementing efficient multiple undo
added 162 characters in body