numpy.ma.flatnotmasked_edges()函数| Python

numpy.ma.flatnotmasked_edges()函数查找第一个和最后一个未屏蔽值的索引。

Syntax : numpy.ma.flatnotmasked_edges(arr)

Parameters :
arr : [ array_like] Input 1-D MaskedArray.

Return : [ndarray or None] The indices of first and last non-masked value in the array. Returns None if all values are masked.

代码#1：

# Python program explaining
# numpy.ma.flatnotmasked_edges() function
  
# importing numpy as geek  
# and numpy.ma module as ma 
import numpy as geek 
import numpy.ma as ma 
  
arr = geek.ma.arange(12)
  
gfg = geek.ma.flatnotmasked_edges(arr)
  
print (gfg)

输出 ：

[ 0, 11]

代码#2：

# Python program explaining
# numpy.ma.flatnotmasked_edges() function
  
# importing numpy as geek  
# and numpy.ma module as ma 
import numpy as geek 
import numpy.ma as ma 
  
arr = geek.ma.arange(12)
arr[:] = geek.ma.masked
  
gfg = geek.ma.flatnotmasked_edges(arr)
  
print (gfg)

输出 ：

None