Open kojix2 opened 3 years ago
In python's numpy, you can substitute by specifying the indices of the x and y axes.
import numpy as np a = np.arange(9).reshape(3,3) x = [0, 1, 2] y = [2, 0, 1] c = [1000, 1001, 1002] a[x, y] = c a # array([[ 0, 1, 1000], # [1001, 4, 5], # [ 6, 1002, 8]])
The same thing is not possible in Ruby. What should I do?
a = Numo::Int32.new(3,3).seq # [[0, 1, 2], # [3, 0, 5], # [6, 7, 0]] x = [0, 1, 2] y = [2, 0, 1] c = [1000, 1001, 1002] a[x, y] = c # Numo::Int32#shape=[3,3] # [[0, 0, 1000], # [0, 0, 1001], # [0, 0, 1002]]
In python's numpy, you can substitute by specifying the indices of the x and y axes.
The same thing is not possible in Ruby. What should I do?