Basic usage of Matplotlib (vii)--plotting scatter plots

Article Author: Tyan
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This paper mainly uses matplotlib to draw the scatter plot. Demo

Import NumPy as NP
import Matplotlib.pyplot as PLT

# data number
n = 1024x768
# mean value is 0, random number with variance 1
x = Np.random.norm  Al (0, 1, n)
y = np.random.normal (0, 1, N)

# calculates the color value colored
= np.arctan2 (y, x)
# plots The scatter plot
plt.scatter (x, Y, S = p, c = color, alpha = 0.5)
# set axis range
Plt.xlim (( -1.5, 1.5))
Plt.ylim (( -1.5, 1.5))

# do not display the value of axis
Lt.xticks (())
plt.yticks (())

plt.show ()

Results

Reference Https://www.youtube.com/user/MorvanZhou