File: lsfit.py

package info (click to toggle)
pycode-browser 1%3A1.02%2Bgit20181006-3
  • links: PTS, VCS
  • area: main
  • in suites: buster
  • size: 6,088 kB
  • sloc: python: 2,779; xml: 152; makefile: 71
file content (18 lines) | stat: -rwxr-xr-x 251 bytes parent folder | download | duplicates (4) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
 
from pylab import *

NP = 50
r = 2*ranf([NP]) - 0.5
x = linspace(0,10,NP)
data = 3 * x + 2 + r

xbar = mean(x)
ybar = mean(data)
b = sum(data*(x-xbar)) / sum(x*(x-xbar))
a = ybar - xbar * b
print a,b

y = a + b * x
plot(x,y)
plot(x,data,'ob')
show()