How can I manipulate arrays using NumPy in Python?

How can I manipulate arrays using NumPy in Python?

You can manipulate arrays in NumPy using various functions like reshape, concatenate, and slice. What specific manipulation do you need help with?

I want to reshape a 1D array into a 2D array.

You can use the reshape method. For example, if you have a 1D array arr, you can reshape it like this: arr.reshape(2, 3) to create a 2x3 array.

What if I want to concatenate two arrays?

You can use the np.concatenate() function. For example, np.concatenate((arr1, arr2), axis=0) will concatenate arr1 and arr2 along the first axis.

Can you give me an example of slicing an array?

Sure! If you have an array arr, you can slice it like this: arr[1:4] to get elements from index 1 to 3.