MCQs on Advanced Plotting and Visualization | MATLAB

1. 3D Plots (plot3, surf, mesh)

1. What function is used to create a 3D line plot in MATLAB?
   • A. plot3
   • B. surf
   • C. mesh
   • D. scatter3
2. Which of the following functions creates a 3D surface plot?
   • A. contour
   • B. surf
   • C. bar3
   • D. scatter
3. To plot a 3D grid-like structure, you use:
   • A. plot3
   • B. mesh
   • C. surf
   • D. contour3
4. The plot3 function requires input arguments for:
   • A. X, Y, and Z coordinates
   • B. X and Y only
   • C. Y and Z only
   • D. Z and color only
5. To add lighting effects to a 3D surface plot, you can use the command:
   • A. camlight
   • B. shading
   • C. view
   • D. rotate3d
6. What is the purpose of the view command in 3D plotting?
   • A. To change the plot color
   • B. To set the azimuth and elevation
   • C. To add markers
   • D. To create gridlines

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2. Customizing Plots (Line Styles, Colors, Markers)

7. Which argument is used to customize the line style in a MATLAB plot?
   • A. 'Color'
   • B. 'LineWidth'
   • C. 'LineStyle'
   • D. 'Marker'
8. To change the color of a plot to red, which value is correct?
   • A. 'red'
   • B. 'r'
   • C. [1, 0, 0]
   • D. Both B and C
9. What marker symbol represents a circle in MATLAB?
   • A. 'x'
   • B. 'o'
   • C. '*'
   • D. 's'
10. How can you increase the width of a plot line?
    • A. Set 'LineWidth' property
    • B. Use 'MarkerSize'
    • C. Adjust 'GridLineStyle'
    • D. Change 'LineStyle'
11. Which of the following properties controls the transparency of plot objects?
    • A. 'Color'
    • B. 'Alpha'
    • C. 'FaceAlpha'
    • D. 'EdgeAlpha'
12. To combine multiple line styles in a single plot, you can use:
    • A. hold on
    • B. subplot
    • C. legend
    • D. plot3

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3. Specialized Plots (Histograms, Boxplots, Pie Charts)

13. Which function is used to create a histogram?
    • A. hist
    • B. bar
    • C. plot
    • D. area
14. What does a boxplot primarily represent?
    • A. Frequency distribution
    • B. Data spread and quartiles
    • C. Proportional distribution
    • D. Time-series analysis
15. The pie function creates a:
    • A. Line chart
    • B. Proportional circular chart
    • C. Distribution chart
    • D. Bar chart
16. To create a stacked bar chart, which function is most appropriate?
    • A. bar
    • B. stackedplot
    • C. area
    • D. histogram
17. What argument is used to customize the colors of a pie chart?
    • A. 'EdgeColor'
    • B. 'FaceColor'
    • C. 'Colormap'
    • D. 'DataColor'
18. Which function provides summary statistics visually?
    • A. histogram
    • B. boxplot
    • C. scatter
    • D. bar

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4. Interactive Plotting

19. What command enables zooming in on a MATLAB plot?
    • A. zoom on
    • B. pan
    • C. rotate3d
    • D. datacursormode
20. To create a draggable interactive point in a plot, you can use:
    • A. plot
    • B. datacursormode
    • C. ginput
    • D. draggable
21. Which interactive feature allows selection of plot data points?
    • A. brush
    • B. zoom
    • C. pan
    • D. rotate
22. What is the purpose of datacursormode in MATLAB?
    • A. To change plot layout
    • B. To display data values interactively
    • C. To modify axes properties
    • D. To add gridlines
23. The ginput function allows you to:
    • A. Export the plot
    • B. Get graphical input points from a figure
    • C. Add legends dynamically
    • D. Create subplots
24. Which function is commonly used for interactive rotation in 3D plots?
    • A. zoom
    • B. rotate3d
    • C. pan
    • D. shading
25. How can you add a slider to a MATLAB figure for dynamic visualization?
    • A. uicontrol
    • B. uigetfile
    • C. uiwindow
    • D. subplot
26. The inputdlg function is used for:
    • A. User input through a dialog box
    • B. Adding labels to plots
    • C. Interactive rotation
    • D. Plot customization
27. What function creates interactive clickable menus in a MATLAB figure?
    • A. menu
    • B. uimenu
    • C. button
    • D. figuremenu
28. Which feature allows zooming and panning while retaining data accuracy?
    • A. plot edit mode
    • B. zoom
    • C. pan
    • D. Both B and C
29. To interactively change axis limits, you can use:
    • A. axis tight
    • B. zoom
    • C. pan
    • D. axis manual
30. What is the advantage of using interactive plotting tools in MATLAB?
    • A. Static analysis
    • B. Enhanced user engagement
    • C. Complex code debugging
    • D. Increased rendering speed

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Answers Table

Qno	Answer (Option with Text)
1	A. plot3
2	B. surf
3	B. mesh
4	A. X, Y, and Z coordinates
5	A. camlight
6	B. To set the azimuth and elevation
7	C. 'LineStyle'
8	D. Both B and C
9	B. 'o'
10	A. Set 'LineWidth' property
11	C. 'FaceAlpha'
12	A. hold on
13	A. hist
14	B. Data spread and quartiles
15	B. Proportional circular chart
16	A. bar
17	C. 'Colormap'
18	B. boxplot
19	A. zoom on
20	C. ginput
21	A. brush
22	B. To display data values interactively
23	B. Get graphical input points from a figure
24	B. rotate3d
25	A. uicontrol
26	A. User input through a dialog box
27	B. uimenu
28	D. Both B and C
29	C. pan
30	B. Enhanced user engagement