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Fast Konno-Ohmachi Spectral Smoothing
Implemented in Rust with a Python interface. The performance gain measured against the widely used Python/numpy implementation that comes with obspy approaches approximately a factor of 2.5 for large and 10 for small vectors (see Benchmarks).
Installation
Installation from pypi:
pip install konnoohmachi
Installation from source:
pip install .
Usage
This smoothes some random numbers:
Python
import konnoohmachi
bandwidth = 40
# using fake random data
frequencies = np.arange(1000)
amplitudes = np.random.rand(1000)
smoothed_amplitudes = konnoohmachi.smooth(frequencies, amplitudes, bandwidth)
Rust
use konnoohmachi;
let frequencies = Array1::<f64>::zeros(10);
let amplitudes = Array1::<f64>::ones(10);
let bandwidth = 40.0;
konnoohmachi_smooth(
frequencies.view().into_dyn(),
amplitudes.view().into_dyn(),
bandwidth,
);
Benchmarks
Measuring the execution time based of increasing sized spectra yields:
❯ python3 benchmark.py
nsamples | Rust | Python | Performance Gain
----------------------------------------------------------
256 | 0.00017 | 0.00192 | 11.30802
512 | 0.00054 | 0.00431 | 7.97596
1024 | 0.00198 | 0.01117 | 5.63623
2048 | 0.00775 | 0.03143 | 4.05371
4096 | 0.03067 | 0.10024 | 3.26844
8192 | 0.12212 | 0.35058 | 2.87080
16384 | 0.49391 | 1.29653 | 2.62506
32768 | 1.98499 | 5.05335 | 2.54578
1 maintainer
Release files for konnoohmachi 1.0.0
For a detailed explanation of source distributions (sdists) and built distributions (wheels), please see the package formats documentation.
Files added late
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Built distributions (wheels)
Total release size: 3.9 MB
Release files / konnoohmachi-1.0.0-cp310-none-win_amd64.whl
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| Download URL | konnoohmachi-1.0.0-cp310-none-win_amd64.whl |
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| Download URL | konnoohmachi-1.0.0-cp310-cp310-macosx_10_9_x86_64.macosx_11_0_arm64.macosx_10_9_universal2.whl |
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| Download URL | konnoohmachi-1.0.0-cp39-none-win_amd64.whl |
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| Download URL | konnoohmachi-1.0.0-cp37-none-win_amd64.whl |
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| Size | 148.5 kB |
| Tags | CPython 3.7 Windows x86-64 |
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| Size | 393.0 kB |
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