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In some case there ist no Result in v(fourier) and a(fourier) diagram but this message:  need some Help please. Thanks Thomas
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Originally Posted by: Thomas Stampa  need some Help please.
Thanks Thomas The function is needed for inspection. Cheers ... Jean
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Originally Posted by: Jean Giraud The function is needed for inspection. That shape or very similar was fitted in Mathcad 11, fitted linfitCheby order 99, not possible Smath ... order 99 too big. It may be why you can't plot derivative, i.e: your Fourier too high order.
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Originally Posted by: Jean Giraud It may be why you can't plot derivative, i.e: your Fourier too high order. Wrong reply ... explain: The Smath derivative operator is essentially the same from your Calculus book. Fourier is the sum of trig sin/cos Σ that at some point derivative operator does not recognize w/o complaining. What you can do from your clean looking plot, discretize the function, next => plot the FD derivative [FD = Finite differences]. Attach the function, I will finish for the derivative. Cheers ... Jean
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Originally Posted by: Jean Giraud The function is needed for inspection.
Cheers ... Jean @ Thomas Stampa, The above is Jean speak for "please upload your working file". Forum members are guessing without seeing your work.
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... refreshed & augmented. Derivative symbolic expansion of that little peanut is huge. Bigger ones will have a long journey across Canada ! Budapest B39 is courtesy from Theodore [85 +] around 2004 You may have to discretize your function, proceed similarly ? Cheers ... Jean  Fourier Budapest39 Smoothing DERIVATIVE.sm (59kb) downloaded 6 time(s).
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Hallo everyone... the script works in Version build:7030 and doesnt works in the latest build 7610. see the different screenshots here. The Smath-script is attached.... Maybe there ist a lot for optimising... I´m very thankfull for further tips.. Greatings Thomas sorry for this bad english.... it isn´t as good as I want....    LF_Aufschaukeln_4_Pers_Personenanregung_Fluchttreppe_allg__optional_getilgt.sm (408kb) downloaded 10 time(s).
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thank You very much for comments......
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@ Jean Giraud super... Budapest39 is a great idea. I will try to use this way....
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Originally Posted by: Thomas Stampa @ Jean Giraudsuper... Budapest39 is a great idea.I will try to use this way.... Sorry Thomas: your document is empty "wrong format". That damned bug hits again ... for how long ? That wrong format is random since SS 7610. Try simplify the name of the document. Maybe some Collab will transit otherwise ? Cheers ... Jean
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eventuelly this: saved with SS7030 Dynamics.sm (410kb) downloaded 10 time(s).
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Check and cross check your formulas and how you defined the equations (e.g. "[" for a matrix). At the moment, if I define x:0,0.1...1, the result for V.fourier(x) says that the "result is above the max allowed positive number" In addition, W.fourier cannot be calculated, but the graph is visible Edited by user 26 January 2021 20:49:22(UTC)
| Reason: Added W.fourier comment
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Originally Posted by: Thomas Stampa eventually this:
saved with SS7030 No luck ... AV at the upload time were suspected. A decent size *.PDF, I volunteer to recreate. Cheers ... Jean
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Originally Posted by: Thomas Stampa .... Maybe there ist a lot for optimising...
I guess not. Your worksheet seems to have all ok, and because of that I try to just take the derivative for a "simple" univariate function evaluating symbolically w.fourier, and copy and paste the result. The error in the derivative remains. So, the issue it's related with the numeric procedure in the SMath derivative, but not with your work and you haven't too much to optimize in your code. As workaround you can use your own numeric derivative. w.fourier.sm (31kb) downloaded 12 time(s).I don't know if this is useful in your work, but this procedure is well know for mathcad for extend a function over a period: periodic.sm (10kb) downloaded 11 time(s).The use of mod or floor is only for numerics, but for symbolics you can use the heaviside function, which actually SMath haven't. Best regards. Alvaro.
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1. I toke Alvaro Monster Big function 2. freaked a bit and discretized a portion, 3. proceeded B39 for continuous construction sanity check, 4. cinterp(X,Y,x) as it is continuous up to 2nd order derivative, 5. applied the infinitesimal derivative ... just perfect. Cheers ... Jean Fourier Budapest39 MonsterBig.sm (66kb) downloaded 5 time(s).
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Originally Posted by: Razonar Originally Posted by: Thomas Stampa .... Maybe there ist a lot for optimising...
I guess not. ... Well, if that's true, you only need to simplify two univariate functions, the speed v and the acceleration a. For v maple() it's enough, for a needs an explicit simplify command.  LF_Aufschaukeln_4_Pers_Personenanregung_Fluchttreppe_allg__optional_getilgt.sm (409kb) downloaded 9 time(s).Best regards. Alvaro.
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Dear Jean Dear Alvaro, I´m very impressed abut your quckliy help.... My problem is solved and I learned a lot . Thanks!!! Best regards , Thomas
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