関連ワード:  3d numpy array to 2d    np 3d array to 2d    flatten 3d numpy array to 2d    convert 3d numpy array to 2d    reshape 3d numpy array to 2d    numpy collapse 3d array to 2d    numpy reduce 3d array to 2d    numpy stack 3d array to 2d    numpy 3d array to list of 2d arrays    numpy repeat 2d array to 3d