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 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 ))
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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.