Numpy > Masked array > マスクの部分を999999で置換する > numpy.ma.MaskedArray.filled() | fill_value引数指定の値で置換する

    import numpy as np
    import numpy.ma as ma

    # checked with PEP8

    MASKED_VALUE = -32768
    SIZE_X = 3
    SIZE_Y = 3

    # 1. data preparation
    ncep = np.array([[3, 1, 4], [1, 5, 9], [2, 6, 5]])
    oisst_unmask = np.array([[2, 7, 1], [8, 2, 8], [1, 8, 2]])
    masks = np.array([[1, 0, 1], [1, 0, 1], [1, 0, 1]])
    oisst_masked = ma.masked_where(masks, oisst_unmask)
    print(oisst_masked)
    oisst_unmasked = oisst_masked.filled()
    print(oisst_unmasked)

[[-- 7 --]
 [-- 2 --]
 [-- 8 --]]
[[999999      7 999999]
 [999999      2 999999]
 [999999      8 999999]]

import numpy as np
import numpy.ma as ma

# checked with PEP8

MASKED_VALUE = -32768
SIZE_X = 3
SIZE_Y = 3

# 1. data preparation
ncep = np.array([[3, 1, 4], [1, 5, 9], [2, 6, 5]])
oisst_unmask = np.array([[2, 7, 1], [8, 2, 8], [1, 8, 2]])
masks = np.array([[1, 0, 1], [1, 0, 1], [1, 0, 1]])
oisst_masked = ma.masked_where(masks, oisst_unmask)
print(oisst_masked)
oisst_unmasked = oisst_masked.filled(fill_value=MASKED_VALUE)
print(oisst_unmasked)

[[-- 7 --]
 [-- 2 --]
 [-- 8 --]]
[[-32768      7 -32768]
 [-32768      2 -32768]
 [-32768      8 -32768]]