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numpy.eye() in Python
numpy.eye(R, C = None, k = 0, dtype = type <‘float’>) : –The eye tool returns a 2-D array with 1’s as the diagonal and 0’s elsewhere. The diagonal can be main, upper, or lower depending on the optional parameter k. A positive k is for the upper diagonal, a negative k is for the lower, and a 0 k (default) is for the main diagonal.
Parameters :
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R : Number of rows
C : [optional] Number of columns; By default M = N
k : [int, optional, 0 by default]
Diagonal we require; k>0 means diagonal above main diagonal or vice versa.
dtype : [optional, float(by Default)] Data type of returned array. Returns :
array of shape, R x C, an array where all elements are equal to zero, except for the k-th diagonal, whose values are equal to one.
Example:
Python
# Python Programming illustrating# numpy.eye methodimport numpy as geek# 2x2 matrix with 1's on main diagonalb = geek.eye(2, dtype = float)print("Matrix b : \n", b)# matrix with R=4 C=5 and 1 on diagonal# below main diagonala = geek.eye(4, 5, k = -1)print("\nMatrix a : \n", a) |
Output :
Matrix b : [[ 1. 0.] [ 0. 1.]] Matrix a : [[ 0. 0. 0. 0. 0.] [ 1. 0. 0. 0. 0.] [ 0. 1. 0. 0. 0.] [ 0. 0. 1. 0. 0.]]
Note :
These codes won’t run on online-ID. Please run them on your systems to explore the working.
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