How to show matplotlib plots?
PythonMatplotlibPython Problem Overview
I am sure the configuration of matplotlib
for python is correct since I have used it to plot some figures.
But today it just stop working for some reason. I tested it with really simple code like:
import matplotlib.pyplot as plt
import numpy as np
x = np.arange(0, 5, 0.1)
y = np.sin(x)
plt.plot(x, y)
There's no error but just no figure shown up.
I am using python 2.6, Eclipse in Ubuntu
Python Solutions
Solution 1 - Python
In matplotlib you have two main options:
-
Create your plots and draw them at the end:
import matplotlib.pyplot as plt plt.plot(x, y) plt.plot(z, t) plt.show()
-
Create your plots and draw them as soon as they are created:
import matplotlib.pyplot as plt from matplotlib import interactive interactive(True) plt.plot(x, y) raw_input('press return to continue') plt.plot(z, t) raw_input('press return to end')
Solution 2 - Python
You must use plt.show()
at the end in order to see the plot
Solution 3 - Python
In case anyone else ends up here using Jupyter Notebooks, you just need
%matplotlib inline
https://stackoverflow.com/questions/43027980/purpose-of-matplotlib-inline
Solution 4 - Python
Save the plot as png
plt.savefig("temp.png")
Solution 5 - Python
plt.plot(X,y)
function just draws the plot on the canvas. In order to view the plot, you have to specify plt.show()
after plt.plot(X,y)
. So,
import matplotlib.pyplot as plt
X = //your x
y = //your y
plt.plot(X,y)
plt.show()
Solution 6 - Python
You have to use show()
methode when you done all initialisations in your code in order to see the complet version of plot:
import matplotlib.pyplot as plt
plt.plot(x, y)
................
................
plot.show()