3D axes with projection='3d' in Matplotlib - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to create a 3D axes object using matplotlib.

Matplotlib

import matplotlib.pyplot as plt
fig = plt.figure()
ax = fig.add_subplot(111, projection=[1])

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

A'3d'

B'xyz'

C'2d'

D'3D'

Attempts:

3 left

💡 Hint

Common Mistakes

Using '3D' instead of '3d' (case sensitive).

Using '2d' which creates a 2D plot.

The correct projection string to create 3D axes is '3d'. It tells matplotlib to create a 3D plot.

2fill in blank

medium

Complete the code to plot a 3D scatter plot with points at coordinates (1,2,3).

Matplotlib

import matplotlib.pyplot as plt
fig = plt.figure()
ax = fig.add_subplot(111, projection='3d')
ax.scatter([1], 2, 3)
plt.show()

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

A'1'

B(1,)

C1

D[1]

Attempts:

3 left

💡 Hint

Common Mistakes

Using a string '1' instead of a number.

Using a list or tuple when a single number is enough.

The scatter method expects numbers or arrays for coordinates. Using 1 as a number is correct for a single point.

3fill in blank

hard

Fix the error in the code to correctly set labels for the 3D axes.

Matplotlib

import matplotlib.pyplot as plt
fig = plt.figure()
ax = fig.add_subplot(111, projection='3d')
ax.set_xlabel('X axis')
ax.set_ylabel('Y axis')
ax.[1]('Z axis')
plt.show()

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

Aset_z_axis

Blabel_z

Cset_z

Dset_zlabel

Attempts:

3 left

💡 Hint

Common Mistakes

Using non-existent methods like set_z_axis or label_z.

Forgetting to set the Z label.

The correct method to set the Z axis label in a 3D plot is set_zlabel.

4fill in blank

hard

Fill both blanks to create a 3D line plot with points (1,2,3) and (4,5,6).

Matplotlib

import matplotlib.pyplot as plt
fig = plt.figure()
ax = fig.add_subplot(111, projection=[1])
ax.plot([1, 4], [2, 5], [2])
plt.show()

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

A'3d'

B[3, 6]

C[3, 5]

D[4, 6]

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong projection strings like '3D'.

Using incorrect z coordinate lists.

The projection must be '3d' to create 3D axes. The z coordinates for the line plot are [3, 6].

5fill in blank

hard

Fill all three blanks to create a 3D surface plot of Z = X^2 + Y^2 over a grid.

Matplotlib

import numpy as np
import matplotlib.pyplot as plt
fig = plt.figure()
ax = fig.add_subplot(111, projection=[1])
X = np.linspace(-1, 1, 10)
Y = np.linspace(-1, 1, 10)
X, Y = np.meshgrid(X, Y)
Z = X[2]2 + Y[3]2
ax.plot_surface(X, Y, Z)
plt.show()

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

A'3d'

B**

C^

D*

Attempts:

3 left

💡 Hint

Common Mistakes

Using '^' which is bitwise XOR, not power.

Using '*' which is multiplication, not power.

The projection must be '3d' for 3D plotting. The power operator in Python is **, so X**2 and Y**2 compute squares.