python tile
tile(A,reps) 创建一个数组,通过reps次重复A >>>a=np.arry([0,1,2])#创建了一个数组 >>>np.tile(a,2)#创建了一个数组,重复a两次 array([0,1,2,0,1,2]) >>>np.tile(a,(2,2))#横向复制两次,纵向复制两次 array([ [0,1,2,0,1,2], [0,1,2,0,1,2] ]) >>>b=np.array([ [1,2], [3,4] ]) >>>np.title(b,2) array([ [1,2,1,2], [3,4,3,4] ]) >>>np.title(b,(2,1))#横向复制两次,纵向复制一次 array([ [1,2], [3,4], [1,2], [3,4] ])