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File:Lissage sinus bruite moyenne glissante.svg

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Summary

Description
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

// ***** 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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26 March 2014

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Date/TimeThumbnailDimensionsUserComment
current08:40, 26 March 2014Thumbnail for version as of 08:40, 26 March 2014487 × 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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