How to output python graphs from terminal?

Question

I am very new to Python. Just installed it yesterday on Ubuntu 15.04. Now I am trying to output a parabola from the terminal. As far I understand I can not output any drawing on terminal so how can I see the graph?

I did : sudo apt-get install python-numpy python-scipy python-matplotlib

my code is

import matplotlib.pyplot as plt
import numpy as np

# create 1000 equally spaced points between -10 and 10
x = np.linspace(-10, 10, 1000)

# calculate the y value for each element of the x vector
y = x**2 + 2*x + 2  

fig, ax = plt.subplots()
ax.plot(x, y)

it does not show error when i do python parabola.py but no output :(

blackmamba · Accepted Answer · 2015-10-17 07:17:43Z

6

You need to add plt.show() at the end of the code, to display the parabola.

http://matplotlib.org/api/pyplot_api.html#matplotlib.pyplot.show

answered Oct 17, 2015 at 7:17

blackmamba

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