Python: x-y-plot with matplotlib
- by kame
I want to plot some data. The first column contains the x-data. But matplotlib doesnt plot this. Where is my mistake?
#fresnel formula
import numpy as np
from numpy import cos
from scipy import *
from pylab import plot, show, ylim, yticks
from matplotlib import *
from pprint import pprint
n1 = 1.0
n2 = 1.5
#alpha, beta, intensity
data = [
[10, 22, 4.3],
[20, 42, 4.2],
[30, 62, 3.6],
[40, 83, 1.3],
[45, 102, 2.8],
[50, 123, 3.0],
[60, 143, 3.2],
[70, 163, 3.8],
]
for i in range(len(data)):
rhotang1 = (n1 * cos(data[i][0]) - n2 * cos(data[i][1]))
rhotang2 = (n1 * cos(data[i][0]) + n2 * cos(data[i][1]))
rhotang = rhotang1 / rhotang2
data[i].append(rhotang) #append 4th value
pprint(data)
x = data[:][0]
y1 = data[:][2]
y3 = data[:][3]
plot(x, y1, x, y3)
show()
EDIT: http://paste.pocoo.org/show/205534/
But it doesnt work.
