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#41 Posted : 24 December 2018 13:47:08(UTC)
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Updated.



alglib.ode.kinetic1.sm (8kb) downloaded 49 time(s).
alglib.ode.kinetic2.sm (11kb) downloaded 41 time(s).
alglib.ode.kinetic3.sm (11kb) downloaded 47 time(s).
alglib.ode.test1.sm (11kb) downloaded 46 time(s).
alglib.ode.test2.sm (11kb) downloaded 41 time(s).
alglib.ode.Amplitude detector.sm (20kb) downloaded 47 time(s).

alglib.ode.kinetic1.pdf (76kb) downloaded 35 time(s).
alglib.ode.kinetic2.pdf (90kb) downloaded 28 time(s).
alglib.ode.kinetic3.pdf (84kb) downloaded 34 time(s).
alglib.ode.test1.pdf (86kb) downloaded 33 time(s).
alglib.ode.test2.pdf (90kb) downloaded 30 time(s).
alglib.ode.Amplitude detector.pdf (148kb) downloaded 30 time(s).

Edited by user 25 December 2018 20:24:43(UTC)  | Reason: Not specified

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#42 Posted : 28 December 2018 20:02:54(UTC)
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Updated. Refactored.

2018-12-28_22-01-34.png
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#43 Posted : 19 January 2019 22:31:14(UTC)
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Updated. al_nleqsolve(2), al_nleqsolve(3), al_nleqsolve(4) added.

2019-01-20_03-48-22.png 2019-01-20_00-30-21.png 2019-01-20_00-30-04.png

Edited by user 20 January 2019 01:54:35(UTC)  | Reason: Not specified

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#44 Posted : 27 January 2019 11:23:49(UTC)
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With numeric optimization (for all functions) it works much faster.

Fourier series coefficients.sm (18kb) downloaded 38 time(s).
Fourier series coefficients.pdf (139kb) downloaded 32 time(s).

2019-01-27_13-21-34.png

Edited by user 27 January 2019 16:42:03(UTC)  | Reason: Not specified

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#45 Posted : 27 January 2019 16:59:21(UTC)
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Example 2.

Fourier series coefficients.sm (29kb) downloaded 66 time(s).
Fourier series coefficients.pdf (171kb) downloaded 47 time(s).

2019-01-27_18-56-56.png
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Offline Jean Giraud  
#46 Posted : 27 January 2019 18:48:06(UTC)
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Otherwise w/o Algib and more Engineering applications

Fourier Budapest39 Smoothing.sm (48kb) downloaded 38 time(s).
Offline Jean Giraud  
#47 Posted : 27 January 2019 19:06:32(UTC)
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Fourier-Fejer-Lanczos interesting too.
IrfanView "ResizeResample" zoom up/down in two options
Fourier or Lanczos the best.

Fourier Fejer Lanczos.sm (10kb) downloaded 38 time(s).
Offline Ber7  
#48 Posted : 18 February 2019 11:42:17(UTC)
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Parameterization of implicit functions with al_nleqsolve

Parametrisation.sm (30kb) downloaded 37 time(s).
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Offline Razonar  
#49 Posted : 18 February 2019 19:59:33(UTC)
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Hi Ber. Nice technique, easy to implement. You can also make that as a function, and monocolor too.

Parametrisation.sm (26kb) downloaded 40 time(s).

Another option could be use y0 as vector, and solve for each element in y0, obtaining res, res1, ..., resn

Best regards.
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Offline Jean Giraud  
#50 Posted : 19 February 2019 05:53:03(UTC)
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1. SS 6179 does not complain
2. Takes ~ 1 hr to terminate the first function
3. NO plot result [NO complain but NO plot ?]
4. Would be interesting checking if the attached SS 6179
runs in your actual AlgLib 3.1x. If NOT => would be a dramatic bug.
It would indicate that all maths based al_nleqsolve would be scrap.

Contour SOLVE [Electron Solve algo Express].sm (21kb) downloaded 43 time(s).
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#51 Posted : 22 November 2020 10:47:54(UTC)
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Updated.

Changes:

- source code updated to ALGLIB 3.16.0;
- refactored.

Edited by user 22 November 2020 11:21:45(UTC)  | Reason: Not specified

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