serialize_array.py

This code demonstrates how to serialize and deserialize an ArrayXf object to/from a file.

This code demonstrates how to serialize and deserialize an ArrayXf object to/from a file. The code creates a 2D array of size 4x2, fills it with float values and writes it to a file. It then reads the data back and prints the content of the array.

import iolink
 
import tempfile
import numpy as np
 
from array import array
 
 
def serialize_array():
    tmpFilePath = "{}/serialization_array_python.txt".format(tempfile.gettempdir())
 
    shape = iolink.VectorXu64(4, 2)
    arr = iolink.ArrayXf(shape)
 
    # fill the array with some values, cell by cell
    arr.set_at((0, 0), 0.0)
    arr.set_at((1, 0), 1.0)
    arr.set_at((2, 0), 2.0)
    arr.set_at((3, 0), 3.0)
    arr.set_at((0, 1), 10.0)
    arr.set_at((1, 1), 11.0)
    arr.set_at((2, 1), 12.0)
    arr.set_at((3, 1), 13.0)
 
    # open a streamAccess to serialize the array to a file
    dst = iolink.StreamAccessFactory.open_file_write(tmpFilePath)
 
    # array is serialized to the file
    iolink.Serialization.encode_arrayxf(arr, dst)
 
    # flush the data to the file
    dst.flush()
 
    # open another streamAccess to read the serialized array from the file
    src = iolink.StreamAccessFactory.open_file_read(tmpFilePath)
 
    # array is deserialized from the file
    arrayRead = iolink.Serialization.decode_arrayxf(src)
 
    # print the content of the array
    print("Content of unserialized array", str(arrayRead))
 
serialize_array()