numpy convert 1d array to 2d
import numpy as np # 1D array one_dim_arr = np.array([1, 2, 3, 4, 5, 6]) # to convert to 2D array # we can use the np.ndarray.reshape(shape) function # here shape is given by two integers seperated by a comma # the two integers specify m,n for the new matrix # ensure that the matrix that you are trying to generate # has a size that meets the number of elements in the 1D array. # for that make sure that # m * n = number of elements in the one dimentional array two_dim_arr = one_dim_arr.reshape(1, 6) #which returns a 2D array print(two_dim_arr) # confirmed by the array.ndim attribute print(two_dim_arr.ndim) # you can even specify one of the dimensions as unknown by passing -1 # numpy will infer the length using the array and remaining dimensions two_dim_arr = one_dim_arr.reshape(1,-1)
