Peak finding (find_peaks) in SciPy - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to import the peak finding function from scipy.

SciPy

from scipy.signal import [1]

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

Apeak_find

Bfind_peaks

Cfind_peak

Dpeaks_find

Attempts:

3 left

💡 Hint

Common Mistakes

Using singular 'find_peak' instead of 'find_peaks'.

Mixing up the order of words in the function name.

The correct function to find peaks in a signal is find_peaks from scipy.signal.

2fill in blank

medium

Complete the code to find peaks in the data array.

SciPy

peaks, _ = find_peaks([1])

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Adata

Bsignal

Carray

Dpeaks

Attempts:

3 left

💡 Hint

Common Mistakes

Passing the wrong variable name to find_peaks.

Using the output variable as input.

The input to find_peaks should be the data array you want to analyze, here named data.

3fill in blank

hard

Fix the error in the code to find peaks with a minimum height of 5.

SciPy

peaks, _ = find_peaks(data, height=[1])

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A{'min': 5}

Bmin=5

Cheight=5

D5

Attempts:

3 left

💡 Hint

Common Mistakes

Passing a dictionary instead of a number to height.

Using keyword-like strings such as 'min=5' or 'height=5'.

The height parameter accepts a scalar number to specify the minimum height threshold for peaks (peaks taller than this value).

4fill in blank

hard

Fill both blanks to create a dictionary of peak heights and filter peaks taller than 3.

SciPy

peak_heights = {peak: [1] for peak in peaks if [2] > 3}

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Adata[peak]

Bpeak

Attempts:

3 left

💡 Hint

Common Mistakes

Using the peak index instead of the data value for height.

Comparing the peak index to 3 instead of the height.

We use data[peak] to get the height of each peak and filter those greater than 3.

5fill in blank

hard

Fill all three blanks to create a dictionary of peaks with heights above 4 and return their indices.

SciPy

result = [1](peak: [2] for peak in peaks if [3] > 4)

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Adict

Bdata[peak]

Dlist

Attempts:

3 left

💡 Hint

Common Mistakes

Using list instead of dict.

Using peak index instead of height for filtering.

We create a dictionary with dict, mapping each peak to its height from data[peak], filtering heights above 4.