Stackplot.py

#Stackplot
import numpy as np
import matplotlib.pyplot as plt
plt.rcParams["font.size"] = 14
x = np.arange(6)
y1 = np.random.randint(1,5,6)
y2 = np.random.randint(1,5,6)
y3 = np.random.randint(1,5,6)
labels = ["sa ", "bo", "py"]

fig, ax = plt.subplots(figsize=(8,6))
ax.stackplot(x, y1, y2, y3, labels=labels)
ax.legend(loc='best')
plt.savefig("stackplot1.png",dpi=100) 
plt.show()

y = np.vstack([y1, y2, y3])

fig, ax = plt.subplots(figsize=(8,6))
ax.stackplot(x, y,labels=labels)
ax.legend(loc='best')
plt.savefig("stackplot2.png",dpi=100) 
plt.show()

fig, ax = plt.subplots(figsize=(8,6))
ax.stackplot(x, y,baseline='sym',labels=labels)
ax.legend(loc='best')
ax.set_title("baseline='sym'")
plt.savefig("stackplot3.png",dpi=100) 
plt.show()

fig, ax = plt.subplots(figsize=(8,6))
ax.stackplot(x, y,baseline='wiggle',labels=labels)
ax.legend(loc='best')
ax.set_title("baseline='wiggle'")
plt.savefig("stackplot4.png",dpi=100) 
plt.show()

#version
import matplotlib
print(matplotlib.__version__)
print(np.__version__)
3.2.2
1.18.5