plot3 for 3D lines in MATLAB - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to plot a 3D line using plot3.

MATLAB

x = 1:5;
y = 2:6;
z = 3:7;
plot3(x, y, [1]);

Drag options to blanks, or click blank then click option'

Az

By

Cx

D1

Attempts:

3 left

💡 Hint

Common Mistakes

Using y or x instead of z for the third argument.

Passing a single number instead of a vector.

The plot3 function requires x, y, and z coordinates. Here, z is the third coordinate vector.

2fill in blank

medium

Complete the code to add grid lines to the 3D plot.

MATLAB

x = 0:0.5:2*pi;
y = sin(x);
z = cos(x);
plot3(x, y, z);
grid [1];

Drag options to blanks, or click blank then click option'

Ashow

Bon

Coff

Dtrue

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'off' which hides the grid.

Using 'true' or 'show' which are not valid options.

Using grid on turns on the grid lines in the plot, making it easier to see the 3D structure.

3fill in blank

hard

Fix the error in the code to plot a red dashed 3D line.

MATLAB

x = 0:1:10;
y = x.^2;
z = sqrt(x);
plot3(x, y, z, '[1]');

Drag options to blanks, or click blank then click option'

A'k:'

B'b--'

C'g-.'

D'r--'

Attempts:

3 left

💡 Hint

Common Mistakes

Using blue or green color codes instead of red.

Using solid line style instead of dashed.

The color and line style are specified as a string. 'r--' means a red dashed line.

4fill in blank

hard

Fill both blanks to create a 3D plot with markers and a green solid line.

MATLAB

x = 1:4;
y = [2, 4, 6, 8];
z = [1, 3, 5, 7];
plot3(x, y, z, '[1][2]');

Drag options to blanks, or click blank then click option'

A'o'

B'g'

C'-'

D'r'

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing up color and marker symbols.

Using red color instead of green.

The marker 'o' adds circles at data points, and 'g' sets the line color to green. The line style defaults to solid if not specified.

5fill in blank

hard

Fill all three blanks to create a 3D plot with blue dash-dot line, and line width 2.

MATLAB

x = linspace(0, 2*pi, 10);
y = sin(x);
z = cos(x);
h = plot3(x, y, z, '[1][2]');
h.LineWidth = [3];

Drag options to blanks, or click blank then click option'

A'b'

B'o'

C'-.'

D2

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong line style symbols.

Setting line width as a string instead of a number.

'b' sets the color blue, '-.' sets dash-dot line style, and LineWidth = 2 makes the line thicker. Markers are not included here.