KwickClips Python · 40 sec · free
Why is my saved Matplotlib image blank?
Short answer. show() clears the figure, so savefig() after it saves an empty picture.
What sets the image type?
The file ending, like .png.
savefig() before show()
| Step | Call | Does |
|---|---|---|
| 1 | plt.bar() | draws |
| 2 | plt.savefig() | saves a file |
| 3 | plt.show() | shows, clears |
Remember
| savefig() first, show() last |
| Ending sets type: .png, .pdf |
You saved your chart, but the image is blank. Why? You called show first. Draw the chart. Then savefig saves it. Show comes last, and clears it. Savefig first, show last. The file ending sets the type.
This clip is from the full lesson: Data Visualisation with Matplotlib — 7 minutes, with the tables, the quick answers and the whole lesson in text.
Useful for: CBSE Class 10 Artificial Intelligence (417), CBSE Class 10 Artificial Intelligence (417), CBSE Class 12 Informatics Practices (065), CBSE Class 12 Informatics Practices (065)
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