関連ワード:  np 2d array to 1d array    numpy 2d array to 1d array    numpy transform 2d array to 1d array    numpy convert 2d array to 1d array    numpy 2d array to 2 1d arrays    numpy 2d array to list of 1d arrays    numpy 2d array multiply 1d array    numpy 2d array minus 1d array    numpy 2d array divide by 1d array    numpy 2d array from two 1d arrays