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In matplotlib, what aspect of the saved image does the dpi parameter primarily influence?

easy📝 Conceptual Q1 of 15
Matplotlib - Export and Publication Quality
In matplotlib, what aspect of the saved image does the dpi parameter primarily influence?
AThe physical size of the figure on the display screen
BThe number of pixels per inch, affecting image clarity
CThe color depth of the saved image
DThe type of file format used when saving
Step-by-Step Solution
Solution:

  1. Step 1: Understand DPI meaning

    DPI stands for dots per inch, which defines pixel density.

  2. Step 2: Effect on image

    Higher DPI means more pixels per inch, resulting in sharper images.

  3. Final Answer:

    The number of pixels per inch, affecting image clarity -> Option B

  4. Quick Check:

    DPI controls pixel density, not physical size or color [OK]
Quick Trick: DPI sets pixel density, not figure size [OK]
Common Mistakes:
  • Confusing DPI with figure size on screen
  • Assuming DPI changes color quality
  • Thinking DPI affects file format

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