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Python (Matplotlib)

# Author: Ika, 2013-07-29 import numpy as np import matplotlib.pyplot as plt import scipy.special as sp import random plt.figure() plt.axes([0.17,0.13,0.79,0.8]) plt.hold(True) Q = [] # Draw the ellipse. X = np.arange(-2.00, 2.001, 0.001) # Quadrant I & II Y = np.sqrt(1-X*X/4) a = plt.plot(X, Y, '-', color='red', lw=2) Q.append(a) # Quadrant III & IV Y = -Y a = plt.plot(X, Y, '-', color='red', lw=2) Q.append(a) plt.xlim(-3,3) plt.ylim(-2,2) # Set up the spines ax = plt.gca() ax.spines['right'].set_color('none') ax.spines['top'].set_color('none') ax.xaxis.set_ticks_position('bottom') ax.spines['bottom'].set_position(('data',0)) ax.yaxis.set_ticks_position('left') ax.spines['left'].set_position(('data',0)) # Set label ax.text(1.5,1,r'$\frac{x^2}{4}+y^2=1$',fontsize=24) plt.savefig("Ellipse_SVG.svg")

 

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