直方图未绘制

Question

data = [1, 2, 1, 3, 3, 1, 4, 2]
print("mean : ",np.mean(data))
print("Standard deviation : ",np.std(data))
print("max : ",np.max(data))
print("min : ",np.min(data))
import matplotlib.pyplot as plt
plt.interactive(True)

plt.show(data)

This is my code for drawing a histogram in pycharm but it ain't showing anything , just printing the print statement. Need help !

Answer 1

You must plot the histogram, here is how:

from matplotlib.pyplot import subplots, show

data = [1, 2, 1, 3, 3, 1, 4, 2]

fig, ax = subplots()
ax.hist(data)

show()

Answer 2

You have to create a plot first with plt.plot(data) and then show it with plt.show() . To plot the histogram, you call plt.hist(data) before plt.show() .

Answer 3

You have to actually tell matplotlib what you want to plot - in this case, the histogram of data .

data = [1, 2, 1, 3, 3, 1, 4, 2]
print("mean : ",np.mean(data))
print("Standard deviation : ",np.std(data))
print("max : ",np.max(data))
print("min : ",np.min(data))
import matplotlib.pyplot as plt
plt.interactive(True)
plt.hist(data)
plt.show(data)

Answer 4

You should not use plt.interactive(True) instesd of this you can use plt.interactive(False) .Then You can run you code and you will show graph :

from matplotlib import pyplot as plt
from numpy import asarray

data = asarray([1, 2, 1, 3, 3, 1, 4, 2])

print("mean : ", data.mean())
print("Standard deviation : ", data.std())
print("max : ", data.max())
print("min : ", data.min())

# plt.interactive(True)
plt.interactive(False)

plt.plot(data)
plt.show()

#plot histogram
plt.hist(data)
plt.show()