numpy.triu() in Python

Last Updated : 09 Mar, 2022

numpy.triu(a, k = 0) : Returns copy of array with upper part of the triangle w.r.t k Parameters :

 a : input array k : [int, optional, 0 by default] Diagonal we require; k>0 means diagonal above main diagonal or vice versa.

Returns :

 Upper triangle of a, having same shape and data-type as a.

Python

# Python Programming illustrating # numpy. triu method import numpy as geek # string input a = geek.matrix([[1, 21, 30], [63 ,434, 3], [54, 54, 56]]) print("Main Diagonal elements : \n", geek. triu(a), "\n") print("Diagonal above main Diagonal elements : \n", geek. triu(a, 1), "\n\n") print("Main Diagonal elements : \n", geek. triu(a, -1))

Output :

 Main Diagonal elements : [[ 1 21 30] [ 0 434 3] [ 0 0 56]] Diagonal above main Diagonal elements : [[ 0 21 30] [ 0 0 3] [ 0 0 0]] Main Diagonal elements : [[ 1 21 30] [ 63 434 3] [ 0 54 56]]

Reference : https://docs.scipy.org/doc/numpy/reference/generated/numpy.triu.html#numpy.triu Note : These NumPy-Python programs won't run on online IDE's, so run them on your systems to explore them.

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