Plotting using numpy and matplotlib with no display upon plt.show()

Question

So I am trying to get a plot to show and I am able to produce the box for said graph with the x and y axis labeled as necessary, however the line/function in itself is not showing. Is there some sort of issue in my code that I am not noticing?

import numpy as np
import math
import matplotlib.pyplot as plt

def main():

    X = []
    Y = []
    x = np.arange(-1.5,1.6, 0.101)
    X.append(x)

    for x in X:
        y = x**3 - x
        Y.append(y)

    X = list(X)
    Y = list(Y)

    print(X)
    print(Y)

    plt.xlabel("x")
    plt.ylabel("y")
    plt.plot(X,Y)
    plt.show()

main()

Don't have a function named as main

Aditya
– Aditya

2018-04-19 03:21:26 +00:00
Commented Apr 19, 2018 at 3:21 — Aditya
– Aditya, Commented Apr 19, 2018 at 3:21
fix your indentation

nj2237
– nj2237

2018-04-19 03:22:18 +00:00
Commented Apr 19, 2018 at 3:22 — nj2237
– nj2237, Commented Apr 19, 2018 at 3:22

amiller27 · Accepted Answer · 2018-04-19 03:22:16Z

1

The problem is that X and Y are lists containing arrays of points, where plot takes arrays of points. If you really need X and Y to be lists containing arrays, then you need to call plot like plt.plot(X[0], Y[0]). Typically, though, you would just have X and Y equal to arrays directly.

answered Apr 19, 2018 at 3:22

amiller27

5065 silver badges9 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

Plotting using numpy and matplotlib with no display upon plt.show()

1 Answer 1

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Related