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Return the array data as a string containing the raw bytes in the array in Numpy
To return the array data as a string containing the raw bytes in the array, use the ma.MaskedArray.tobytes() method in Numpy. The array is filled with a fill value before the string conversion.
The fill_value is the value used to fill in the masked values. Default is None, in which case MaskedArray.fill_value is used.
The order parameter is the Order of the data item in the copy. Default is ‘C’.
‘C’ - C order (row major).
‘F’ - Fortran order (column major).
‘A’ - Any, current order of array
None - Same as ‘A’.
Steps
At first, import the required library −
import numpy as np import numpy.ma as ma
Create an array with int elements using the numpy.array() method −
arr = np.array([[49, 85, 45], [67, 33, 59]])
print("Array...
", arr)
print("
Array type...
", arr.dtype)Get the dimensions of the Array −
print("Array Dimensions...
",arr.ndim)Create a masked array and mask some of them as invalid −
maskArr = ma.masked_array(arr, mask =[[0, 0, 1], [ 0, 1, 0]])
print("
Our Masked Array
", maskArr)
print("
Our Masked Array type...
", maskArr.dtype)Get the dimensions of the Masked Array −
print("
Our Masked Array Dimensions...
",maskArr.ndim)Get the shape of the Masked Array −
print("
Our Masked Array Shape...
",maskArr.shape)Get the number of elements of the Masked Array −
print("
Elements in the Masked Array...
",maskArr.size)
Return the array data as a string containing the raw bytes in the array, use the ma.MaskedArray.tobytes() method in Numpy −
print("
Result...
",maskArr.tobytes())Example
# Python ma.MaskedArray - Return the array data as a string containing the raw bytes in the array
import numpy as np
import numpy.ma as ma
# Create an array with int elements using the numpy.array() method
arr = np.array([[49, 85, 45], [67, 33, 59]])
print("Array...
", arr)
print("
Array type...
", arr.dtype)
# Get the dimensions of the Array
print("
Array Dimensions...
",arr.ndim)
# Create a masked array and mask some of them as invalid
maskArr = ma.masked_array(arr, mask =[[0, 0, 1], [ 0, 1, 0]])
print("
Our Masked Array
", maskArr)
print("
Our Masked Array type...
", maskArr.dtype)
# Get the dimensions of the Masked Array
print("
Our Masked Array Dimensions...
",maskArr.ndim)
# Get the shape of the Masked Array
print("
Our Masked Array Shape...
",maskArr.shape)
# Get the number of elements of the Masked Array
print("
Elements in the Masked Array...
",maskArr.size)
# To return the array data as a string containing the raw bytes in the array, use the ma.MaskedArray.tobytes() method in Numpy
print("
Result...
",maskArr.tobytes())Output
Array... [[49 85 45] [67 33 59]] Array type... int64 Array Dimensions... 2 Our Masked Array [[49 85 --] [67 -- 59]] Our Masked Array type... int64 Our Masked Array Dimensions... 2 Our Masked Array Shape... (2, 3) Elements in the Masked Array... 6 Result... b'1\x00\x00\x00\x00\x00\x00\x00U\x00\x00\x00\x00\x00\x00\x00?B\x0f\x00\x00\x00\x00\x00C\x00\x00\x00\x00\x00\x00\x00?B\x0f\x00\x00\x00\x00\x00;\x00\x00\x00\x00\x00\x00\x00'
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