You want to plot multiple data sets but only show plots where y-values are positive. How can you combine hold on with conditional plotting?

hard📝 Application Q9 of 15

MATLAB - 2D Plotting

You want to plot multiple data sets but only show plots where y-values are positive. How can you combine hold on with conditional plotting?

Aplot(x, y1); hold on; plot(x(y2>0), y2(y2>0)); hold off;

Bhold on; plot(x, y1); plot(x, y2); hold off;

Cplot(x, y1); plot(x, y2(y2>0)); hold on;

Dhold off; plot(x, y1(y1>0)); hold on; plot(x, y2);

Step-by-Step Solution

Solution:

Step 1: Plot first data normally
plot(x, y1) plots all y1 values.
Step 2: Use logical indexing to plot only positive y2 values
plot(x(y2>0), y2(y2>0)) plots only points where y2 is positive.
Step 3: Use hold on to combine plots and hold off after
This ensures both plots appear on the same figure.
Final Answer:
plot(x, y1); hold on; plot(x(y2>0), y2(y2>0)); hold off; -> Option A
Quick Check:
Use logical indexing with hold on to filter plots = D [OK]

Quick Trick: Use logical indexing with hold on to filter plots [OK]

Common Mistakes:

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