numpy.tri(R, C = None, k = 0, dtype = ‘float’) : Creates an array with 1’s at and below the given diagonal(about k) and 0’s elsewhere.
R : Number of rows C : [optional] Number of columns; By default R = C k : [int, optional, 0 by default] Diagonal we require; k>0 means diagonal above main diagonal or vice versa. dtype : [optional, float(byDefault)] Data type of returned array.
tri with k = 1 : [[ 1. 1. 0.] [ 1. 1. 1.]] tri with main diagonal : [[ 1. 0. 0. 0. 0.] [ 1. 1. 0. 0. 0.] [ 1. 1. 1. 0. 0.]] tri with k = -1 : [[ 0. 0. 0. 0. 0.] [ 1. 0. 0. 0. 0.] [ 1. 1. 0. 0. 0.]]
These NumPy-Python programs won’t run on onlineID, so run them on your systems to explore them
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