File:Lissage_sinus_bruite_moyenne_glissante.svg
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Summary
DescriptionLissage sinus bruite moyenne glissante.svg |
English: Smoothing of a noisy sine (blue curve) with a moving average (red curve, 10 points interval).
Français : lissage d'un sinus bruité avec la méthode de la moyenne glissante (intervalle de 10 points). |
Date | |
Source | Own work |
Author | Christophe Dang Ngoc Chan (Cdang (talk)) |
Other versions | same data with cubic Hermite spline smoothing: File:Lissage sinus bruite spline cubique.svg |
Scilab source
This media was created with Scilab, a free open-source software. Here is a listing of the Scilab source used to create this file. |
// ***** Génération des données *****
m = 200; // nombre de points mesurés
bruit = 0.2; // amplitude du bruit
x = linspace(0, 2*%pi, m);
y = sin(x) + 0.2*rand(x, "normal"); // valeurs bruitées
// ***** Lissage *****
p = 10; // largeur de l'intervalle
h = 1/p*ones(1, p); // fonction porte pour le lissage
yliss = conv(h, y); // calcul des valeurs lissées
// ***** Tracé *****
plot(x, y) // données originales
plot(x, yliss(1+p/2:$-p/2+1), "r") // données lissées
Licensing
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depicts
26 March 2014
File history
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Date/Time | Thumbnail | Dimensions | User | Comment | |
---|---|---|---|---|---|
current | 08:40, 26 March 2014 | 487 × 362 (35 KB) | Cdang | {{Information |Description={{en|1=Smoothing of a noisy sine with the method of moving averages (10 points interval).}} {{fr|1=lissage d'un sinus bruité avec la méthode de la moyenne glissante (intervalle de 10 points).}} |Source={{own}} |Date=2014-03... |
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Short title | Lissage d'un sinus bruité par la méthode de la moyenne glissante |
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Width | 486.63373 |
Height | 361.81445 |