為什麼我的 Matplotlib Savefig 輸出空白影像？

Savefig Outputs Blank Image - Troubleshooting

When using Matplotlib to save plots, it can be encountered that the resulting images are blank. To resolve this issue, consider the following factors:

subplot() Positioning:

Verify the subplot() positions carefully, ensuring that the plots are placed correctly. Try adjusting the values passed to matplotlib as suggested in the answer, especially when using conditional statements.

Figure Handling:

By default, Matplotlib creates a new figure when plt.show() is called. To prevent this and save the desired figure, call plt.savefig() before calling plt.show(). Alternatively, create a Figure object using plt.gcf() and save the figure using its savefig() method at any time.

Here's an example with both methods:

Before plt.show()

plt.savefig('tessstttyyy.png', dpi=100)
plt.show()

Using plt.gcf()

fig1 = plt.gcf()
plt.show()
plt.draw()
fig1.savefig('tessstttyyy.png', dpi=100)

Additional Considerations:

• Ensure that the T0 value is correctly handled or consider removing the conditional subplot() cases.
• Verify that the data being plotted is valid and non-zero.
• Check if there are any errors or warnings in the console that could indicate underlying issues with the code.

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