EDIT: This question is a duplicate. Original question's link is posted above.
I am using Python to plot a set of values which are showing good on the Python terminal (using Jupyter NoteBook) but when I save it, the saved file when opened shows an empty (completely white) photo. Here's my code:
import matplotlib.pyplot as plt
plt.plot([1,3,4])
plt.show()
plt.savefig('E:/1.png')
You should save the plot before closing it: indeed, plt.show() dislays the plot, and blocks the execution until after you close it; hence when you attempt to save on the next instruction, the plot has been destroyed and can no longer be saved.
import matplotlib.pyplot as plt
plt.plot([1,3,4])
plt.savefig('E:/1.png') # <-- save first
plt.show() # <-- then display
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