Numpy maskearray . common _ fill _ value()函数| Python
原文:https://www . geeksforgeeks . org/numpy-masked array-common _ fill _ value-function-python/
numpy.MaskedArray.common_fill_value() 函数用于返回两个掩码数组之间的公共填充值。如果arr1.fill_value == arr2.fill_value则返回填充值，否则返回无。
语法:
numpy.ma.common_fill_value(arr1, arr2)参数: arr1、arr2 : 【掩码数组】要比较填充值的掩码数组。
返回:【标量或无】常用填充值或无。
代码#1 :
# Python program explaining
# numpy.MaskedArray.common_fill_value() method
# importing numpy as geek
# and numpy.ma module as ma
import numpy as geek
import numpy.ma as ma
# creating input arrays
in_arr1 = geek.array([[1, 2], [ 3, -1], [ 5, -3]])
print ("1st Input array : ", in_arr1)
in_arr2 = geek.array([[10, 20], [ 30, -10], [ 50, -30]])
print ("2nd Input array : ", in_arr2)
# Now we are creating masked arrays.
# by making entry as invalid.
mask_arr1 = ma.masked_array(in_arr1, mask =[[1, 0], [ 1, 0], [ 0, 0]],
fill_value = 5)
print ("1st Masked array : ", mask_arr1)
mask_arr2 = ma.masked_array(in_arr2, mask =[[1, 1], [ 1, 0], [ 0, 0]],
fill_value = 5)
print ("2nd Masked array : ", mask_arr2)
# applying MaskedArray.common_fill_value
# methods to masked array
out_arr = ma.common_fill_value(mask_arr1, mask_arr2)
print ("common filled value : ", out_arr)
Output:
1st Input array : [[ 1 2]
[ 3 -1]
[ 5 -3]]
2nd Input array : [[ 10 20]
[ 30 -10]
[ 50 -30]]
1st Masked array : [[-- 2]
[-- -1]
[5 -3]]
2nd Masked array : [[-- --]
[-- -10]
[50 -30]]
common filled value : 5
代码#2 :
# Python program explaining
# numpy.MaskedArray.common_fill_value() method
# importing numpy as geek
# and numpy.ma module as ma
import numpy as geek
import numpy.ma as ma
# creating input arrays
in_arr1 = geek.array([[1, 2], [ 3, -1], [ 5, -3]])
print ("1st Input array : ", in_arr1)
in_arr2 = geek.array([[10, 20], [ 30, -10], [ 50, -30]])
print ("2nd Input array : ", in_arr2)
# Now we are creating masked arrays.
# by making entry as invalid.
mask_arr1 = ma.masked_array(in_arr1, mask =[[1, 0], [ 1, 0], [ 0, 0]],
fill_value = 5)
print ("1st Masked array : ", mask_arr1)
mask_arr2 = ma.masked_array(in_arr2, mask =[[1, 1], [ 1, 0], [ 0, 0]],
fill_value = 10)
print ("2nd Masked array : ", mask_arr2)
# applying MaskedArray.common_fill_value
# methods to masked array
out_arr = ma.common_fill_value(mask_arr1, mask_arr2)
print ("common filled value : ", out_arr)
Output:
1st Input array : [[ 1 2]
[ 3 -1]
[ 5 -3]]
2nd Input array : [[ 10 20]
[ 30 -10]
[ 50 -30]]
1st Masked array : [[-- 2]
[-- -1]
[5 -3]]
2nd Masked array : [[-- --]
[-- -10]
[50 -30]]
common filled value : None
