Python Numpy MaskedArray.common_fill_value()函数
numpy.MaskedArray.common_fill_value()函数用于返回两个屏蔽数组之间的共同填充值。如果arr1.fill_value == arr2.fill_value则返回填充值,否则返回 None。
语法 : numpy.ma.common_fill_value(arr1, arr2)
参数:
arr1, arr2 : [ MaskedArray ] 要比较填充值的遮蔽数组。
返回 : [标量或无] 普通填充值或无。
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)
输出:
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)
输出:
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