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You want to animate a moving sine wave in MATLAB without flickering or resizing. Which approach is best?

hard📝 Application Q15 of 15
MATLAB - 3D Plotting and Visualization
You want to animate a moving sine wave in MATLAB without flickering or resizing. Which approach is best?
AClear figure inside loop, plot new sine wave, use pause only
BSet fixed axis limits before the loop, update plot data inside loop, use drawnow and pause
CPlot sine wave once outside loop, then update axis limits inside loop
DUse pause inside loop without drawnow or axis limits
Step-by-Step Solution
Solution:
  1. Step 1: Prevent flickering by fixing axis limits

    Setting axis limits before the loop stops MATLAB from resizing the plot each frame, avoiding flicker.
  2. Step 2: Update plot data and refresh display properly

    Update the sine wave data inside the loop, then call drawnow to refresh and pause to control speed.
  3. Final Answer:

    Set fixed axis limits before the loop, update plot data inside loop, use drawnow and pause -> Option B
  4. Quick Check:

    Fixed axis + drawnow + pause = smooth animation [OK]
Quick Trick: Fix axis limits before loop to avoid flicker [OK]
Common Mistakes:
  • Clearing figure each loop causing flicker
  • Not fixing axis limits causing resizing
  • Using pause without drawnow

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