matplotlib: generate a new graph in a new window for subsequent program runs

Question

I have a Python program that generates graphs using matplotlib. I am trying to get the program to generate a bunch of plots in one program run (the user is asked if they want to generate another graph) all in separate windows. Any way I can do this?

Answer 1

Using the latest matlibplot, I found the following to work for my purposes:

# create figure (will only create new window if needed)
plt.figure()
# Generate plot1
plt.plot(range(10, 20))
# Show the plot in non-blocking mode
plt.show(block=False)

# create figure (will only create new window if needed)
plt.figure()
# Generate plot2
plt.plot(range(10, 20))
# Show the plot in non-blocking mode
plt.show(block=False)

...

# Finally block main thread until all plots are closed
plt.show()

Answer 2

To generate a new figure, you can add plt.figure() before any plotting that your program does.

import matplotlib.pyplot as plt
import numpy as np

def make_plot(slope):
    x = np.arange(1,10)
    y = slope*x+3
    plt.figure()
    plt.plot(x,y)

make_plot(2)
make_plot(3)