Loess (Lowess) smoothing of data
Source code name: "stat_smoothing_data.py"
Programming language: Python
Topic: Statistics/Smoothing
DMelt Version 1. Last modified: 05/26/2016. License: Pro
https://datamelt.org/code/cache/stat_smoothing_data_2618.py
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from java.awt import Color,Font
from java.util import Random
from jhplot import HPlot,P1D
from jhplot.stat import Interpolator

c1 = HPlot("Canvas")
c1.visible()
c1.setRange(0,100,0,100)

h = P1D("Data")
r=Random()
for i in range(100): 
      h.add(i,i+r.nextGaussian()*0.2*i,0.1,0.1,0.2,0.2)
c1.draw(h)

k=Interpolator(h)
p1=k.smoothLoess(0.3,0,0.4) 
p1.setStyle("l")
p1.setColor(Color.red)
c1.draw(p1)
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