File:Kelvinkei,n=0glyph.png

#!/usr/bin/python
import numpy as np
import matplotlib.pyplot as plt
from mpmath import *
from pylab import rcParams
rcParams['figure.figsize'] = 2.4,2.4

x=np.arange(0,8,0.01)
f=np.vectorize(lambda x: kei(0,x))
y=f(x)

x2=np.arange(-30,30,0.1)
def g(x):
        return 0
h=np.vectorize(g)
y2=h(x2)

fig, ax = plt.subplots()
ax.spines['top'].set_color('none')
ax.spines['left'].set_color('none')
ax.spines['right'].set_color('none')
plt.tick_params(axis='x', which='both', bottom='off', top='off', labelbottom='off')
plt.tick_params(axis='y', which='both', left='off', right='off', labelleft='off')

plt.plot(x,y,linewidth=5,color='Black')
plt.plot(x2,y2,linewidth=1,color='Black')
plt.plot(y2,x2,linewidth=1,color='Black')

plt.xlim(-0.1,8)
plt.ylim(-0.8,0.1)

plt.savefig('kelvinkei,n=0glyph.png',bbox_inches='tight',pad_inches=0.0)