Matplotlib Plot Window Is White Blank Without Showing Any Image

I am on Mac OS 10.14.4. I have python installed in miniconda3 environment. Below is the list of packages with 'conda list' The issue I am having is when I run 'python' in the te

Solution 1:

I was able to fix the issue with macOS Majave 10.14.6 without having to reinstall via Anaconda/Conda by adding this code (as explained in https://stackoverflow.com/a/56025793/1657354):

import matplotlib
import platform
if platform.system() == 'Darwin':
    matplotlib.use('MacOSX')
else:
    matplotlib.use('TkAgg')

I believe the platform.system() == 'Darwin' allows this code to work under other platforms.

Solution 2:

In my experience, to get this working on Mac OS, I found it much easier going with the full version of Anaconda and using VS Code as an Editor/IDE.

Uninstall Miniconda:

• Open a terminal window and remove the entire miniconda install directory:

rm -rf ~/miniconda.

• You can also edit ```~/.bash_profile`` and remove the miniconda directory from your PATH environment variable
• Remove the hidden .condarc file and .conda and .continuum directories which are usually created in your directory:

rm -rf ~/.condarc ~/.conda ~/.continuum

Install Anaconda and VS Code:

• Go to the installation website and download the Mac OS installer (I recommend choosing the latest version of Python (3.7)

• Follow the installation instructions

• Once installed open the Anaconda Navigator and select the option to install VS code:

VS Code Install/Launch

Run a test script

• Open VS Code via the Anaconda Installer
• Create a new script: File > New File
• Save it as "test.py"
• Enter the following code:

import matplotlib.pyplot as plt
import numpy as np

x = np.linspace(-4*np.pi,4*np.pi)
y = np.sin(x)
plt.plot(x,y,'.-')
plt.show()

• Save the file
• Select the Anaconda Python interpreter:
• Open the command pallet (Ctrl+Shift+P)
• Enter "Python: Select Interpreter"
• Choose the one that says "anaconda" in the name...
• Open the command dialog box again (Ctrl+Shift+P)
• Enter "Python: Create Terminal" and in terminal run:

python test.py

Hopefully, this will all work and you'll see the following:

Sin function graph