MATLAB file I/O (loadmat, savemat) in SciPy - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to load a MATLAB file named 'data.mat' into a Python variable.

SciPy

from scipy.io import [1]
data = [1]('data.mat')

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

Areadmat

Bsavemat

Cloadmat

Dloadtxt

Attempts:

3 left

💡 Hint

Common Mistakes

Using savemat instead of loadmat

Trying to use loadtxt which is for text files

The loadmat function from scipy.io loads MATLAB files into Python.

2fill in blank

medium

Complete the code to save a Python dictionary 'my_data' to a MATLAB file named 'output.mat'.

SciPy

from scipy.io import [1]
my_data = {'a': [1, 2, 3]}
[1]('output.mat', my_data)

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

Aloadmat

Bdumpmat

Csave

Dsavemat

Attempts:

3 left

💡 Hint

Common Mistakes

Using loadmat instead of savemat

Using save which is not a scipy.io function

The savemat function saves Python data to a MATLAB .mat file.

3fill in blank

hard

Fix the error in the code to correctly load a MATLAB file and access variable 'x'.

SciPy

from scipy.io import loadmat
data = loadmat('file.mat')
x = data[1]

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

A['x']

Bx

C.x

D['data']

Attempts:

3 left

💡 Hint

Common Mistakes

Trying to access variable as an attribute with dot notation

Using variable name without quotes or brackets

MATLAB variables are accessed from the loaded dictionary using square brackets and the variable name as a string.

4fill in blank

hard

Fill both blanks to save a dictionary with variable 'y' to 'result.mat' and then load it back.

SciPy

from scipy.io import [1], [2]
data_to_save = {'y': [4, 5, 6]}
[1]('result.mat', data_to_save)
loaded_data = [2]('result.mat')

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

Asavemat

Bloadmat

Csave

Dreadmat

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing up savemat and loadmat

Using non-existing functions like save or readmat

Use savemat to save and loadmat to load MATLAB files.

5fill in blank

hard

Fill all three blanks to load 'data.mat', extract variable 'z', and save it to 'new_data.mat'.

SciPy

from scipy.io import [1], [2]
data = [1]('data.mat')
z = data['z']
[2]('new_data.mat', {'z': z})

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

Aloadmat

Bsavemat

Cload

Dsave

Attempts:

3 left

💡 Hint

Common Mistakes

Using save or load which are not scipy.io functions

Not importing both functions before use

Use loadmat to load and savemat to save MATLAB files.