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These examples are referred to from the replacement page of https://portal.hdfgroup.org/display/HDF5/Other+Examples.
55 lines
928 B
Python
55 lines
928 B
Python
#
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# This example shows how to write a hyperslab to an existing dataset.
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#
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import h5py
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import numpy as np
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#
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# Create a file using default properties.
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#
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file = h5py.File('hype.h5','w')
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#
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# Create "IntArray" dataset.
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#
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dim0 = 8
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dim1 = 10
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dataset = file.create_dataset("IntArray", (dim0,dim1), "i")
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#
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# Initialize data object with 0.
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#
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data = np.zeros((dim0, dim1))
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#
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# Initialize data for writing.
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#
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for i in range(dim0):
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for j in range(dim1):
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if j < dim1/2:
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data[i][j]= 1
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else:
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data[i][j] = 2
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#
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# Write data
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#
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dataset[...] = data
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print("Data written to file:")
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print(dataset[...])
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#
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# Close the file before exiting
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#
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file.close()
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#
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# Open the file and dataset.
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#
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file = h5py.File('hype.h5','r+')
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dataset = file['IntArray']
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#
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# Write a selection.
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#
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dataset[1:4, 2:6] = 5
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print("Data after selection is written:")
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print(dataset[...])
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#
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# Close the file before exiting
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#
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file.close()
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