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What is the main issue with this MATLAB animation code?

medium📝 Debug Q6 of 15
MATLAB - 3D Plotting and Visualization
What is the main issue with this MATLAB animation code?
figure;
for i = 1:5
plot(i, i^2, 'bo');
pause(0.5);
end
AThe plot is overwritten each iteration, so only the last point is visible
BThe pause function is used incorrectly and causes errors
CThe figure command should be inside the loop to update the plot
DThe plot command syntax is invalid for animation
Step-by-Step Solution
Solution:
  1. Step 1: Understand plot behavior in loops

    Each call to plot without hold on clears the previous plot.
  2. Step 2: Identify missing hold on

    Without hold on, only the last plotted point remains visible after the loop.
  3. Step 3: Correct approach

    Add hold on before the loop to retain all points during animation.
  4. Final Answer:

    Option A -> Option A
  5. Quick Check:

    Plot overwritten each iteration without hold on [OK]
Quick Trick: Use hold on to keep plots during animation [OK]
Common Mistakes:
  • Not using hold on causes plot clearing
  • Moving figure inside loop is unnecessary
  • Pause function usage is correct here

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