MATLAB 2D and 3D Plotting 2

Question 1

Which function adds a color bar legend to a surface plot in MATLAB?

Accepted Answer

colorbar

Answer

colorbar displays a color scale bar alongside the current axes to indicate the data values mapped to colors.

Question 2

What does the 'hold on' command do in MATLAB plotting?

Accepted Answer

Allows subsequent plots to be added to the current figure without erasing existing content

Answer

'hold on' retains the current plot and its properties so that new plots added with subsequent commands are overlaid on the same axes.

Question 3

In MATLAB, which property of a plot line specifies its thickness?

Accepted Answer

LineWidth

Answer

The LineWidth property controls the width of plot lines and can be set as a name-value pair in plotting functions like plot().

Question 4

Which MATLAB function creates a bar chart?

Accepted Answer

bar

Answer

The bar() function creates a 2D bar chart where each data value is represented as a vertical bar.

Question 5

How do you set the x-axis limits to range from 0 to 10 in MATLAB?

Accepted Answer

xlim([0 10])

Answer

xlim([min max]) sets the x-axis display limits of the current axes to the specified range.

MATLAB - MATLAB Technical Computing Practice Test