How to Sort Arrays by the nth Column in Python?

Data Exploration & Visualization
,
#1

I want to achieve this result using code by sorting the integers in a column, and having the rows sort themselves accordingly. Can anyone provide the code for this?

Screenshot 2023-03-01 005014

#4

You can use this code snippet to achieve your desired results. It starts by importing the NumPy library as np and creating a 2D array named ‘arr’. The code then sorts the array based on the values in the second column (index 1) in descending order using np.argsort(-arr[:,1]). The sorted indices are stored in sorted_indices, and a new array, sorted_arr, is created by indexing the original array with these sorted indices.

Note that

  • The negative sign in np.argsort(-arr[:,1]) is used for descending order sorting.