what 2 numpy commands can create a array with diagonal 1s

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Tomas Alvarez answered on April 30, 2021 Popularity 7/10 Helpfulness 1/10

answer what 2 numpy commands can create a array with diagonal 1s

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what 2 numpy commands can create a array with diagonal 1s

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np.eyes(), np.identity()

[[1. 0. 0. 0. 0.]
  [0. 1. 0. 0. 0.]
  [0. 0. 1. 0. 0.]
  [0. 0. 0. 1. 0.]
  [0. 0. 0. 0. 1.]]

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Source: blackboard.waketech.edu

Tags: diagonal numpy python

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Contributed on Mar 04 2023

Tomas Alvarez

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numpy get diagonal matrix from matrix

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np.diag(np.diag(x))

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Contributed on Apr 30 2021

Clumsy Capuchin

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how to sum numpy matrix diagonal

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np.trace(matrix)

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Contributed on Oct 06 2021

TheRubberDucky

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sum of diagonal elements of a matrix python without numpy

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class Solution(object):
    def diagonalSum(self, array):
        """
        :type array: List[List[int]]
        :rtype: int
        """
        n = len(array)
        primary = 0
        secondary = 0;
        for i in range(0, n):
            primary += array[i][i]
            secondary += array[i][n-i-1]
        if (n % 2 == 0): return primary + secondary
        else: return primary + secondary - array[n//2][n//2]

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Tags: diagonal elements matrix numpy python sum

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Contributed on May 23 2022

Mayur Rewatkar

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how to find the multiplication of diagonal of a numpy array

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import numpy as np
a = np.matrix([[1, 1, 1],
             [1, 2, 3],
             [3, 3, 3]])

prod_diag = a.diagonal().prod()
print(prod_diag)
# gives 6 as answer

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Source: stackoverflow.com

Tags: diagonal find numpy python

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Contributed on Oct 17 2022

uzoma Nwachukwu

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what 2 numpy commands can create a array with diagonal 1s

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numpy get diagonal matrix from matrix

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