flipud : Flip an array vertically. Notes --- rot90(m, k=1 axes=(1,0)) is the reverse of rot90(, k=1, axes=(0,1)) rot90(m, k=1, axes(1,)) is to rot90(m, k=-1, axes=(0,1)) 示例: 1 2 3 4 5 6 7 8 9 10 1112 13 14 15 16 >>> m = np.array...
Instead of using theaxisparameter, we can simply useflipud()to flip vertically andfliplr()to flip horizontally. importnumpyasnp# create an arrayarray1 = np.array([[0,1], [2,3]]) # flip the elements of array1 verticallyarray2 = np.flipud(array1)# flip the elements of array1 horizont...
axis=0) array([ 2., 3.]) >>> np.mean(a, axis=1) array([ 1.5, 3.5]) >>> a = np.zeros((2, 512*512), dtype=np.float32) >>> a[0, :] = 1.0 >>> a[1, :] = 0.1 >>> np.mean(a) 0.54999924
Next, we have used the np.flipud() function to flip the X array vertically. The resulting array after flipping X upside down is a 3x3 square diagonal matrix where the diagonal elements are in reverse order i.e., 5, 3, and 1. Pictorial Presentation: Example: Flipping arrays vertically wit...
The function reverse the order of elements in an array to help with processing data in reverse order, or to transform data in a way that is required by a particular application or algorithm. Additionally, it can be used in image processing applications to flip images horizontally or vertically...
numpy数组基本操作,包括copy, shape, 转换(类型转换), type, 重塑等等。这些操作应该都可以使用numpy.fun(array)或者array.fun()来调用。 Basic operations copyto(dst, src[, casting, where])Copies values from one array to another, broadcasting as necessary. ...
Theflipud() functionis used to flip arrays vertically (up/down). Ans this is how NumPy reverse array in Python uses flipud() function. import numpy as np states = np.array([["Illinois", "Indiana"], ["Wisconsin", "Michigan"]]) ...
创建数组使用的函数有:np.array()、np.zeros()、np.ones()、np.empty()、np.arange、np.linspace()、np.random.rand()。 np.array()接受Python list,返回一个NumPy的ndarray。 >>> import numpy as np >>> import numpy as np >>> np.array([1, 2, 3]) # 创建1维数组 ...
Reversed array : [[10 9 8 7 6] [ 5 4 3 2 1]] 1. 2. 3. 4. 5. 6. 也可以使用flip()方法来反转ndarray。 a = np.array([[1,2,3,4,5], [6,7,8,9,10]]) print('Original array :','\n',a) print('Reversed array vertically :','\n',np.flip(a,axis=1)) ...
a = np.array([[1,2,3,4,5],[6,7,8,9,10]])print('Original array :','\n',a)print('Reversed array vertically :','\n',np.flip(a,axis=1))print('Reversed array horizontally :','\n',np.flip(a,axis=0))Original array : [[ 1 2 3 4 5] [ 6 7 8 9 10]]...