How to read a specific dataset from an HDF5 file into a NumPy array?
NumPy: I/O Operations Exercise-10 with Solution
Write a NumPy program that reads a specific dataset from an HDF5 file into a NumPy array.
Sample Solution:
Python Code:
import numpy as np
import h5py
# Define the path to the HDF5 file
hdf5_file_path = 'data.h5'
# Read the specific dataset from the HDF5 file into a NumPy array
with h5py.File(hdf5_file_path, 'r') as hdf5_file:
dataset_name = 'dataset' # Specify the dataset name
data_array = hdf5_file[dataset_name][:]
# Print the NumPy array
print(data_array)
Output:
[[1 2 3] [4 5 6] [7 8 9]]
Explanation:
- Import NumPy and h5py Libraries: Import the NumPy and h5py libraries to handle arrays and HDF5 file operations.
- Define HDF5 File Path: Specify the path to the HDF5 file containing the dataset.
- Read Specific Dataset: Open the HDF5 file in read mode using h5py.File(). Specify the name of the dataset you want to read and load it into a NumPy array.
- Print NumPy Array: Output the resulting NumPy array to verify that the dataset was read correctly from the HDF5 file.
Python-Numpy Code Editor:
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