Pylake 1.8.0

Here is an overview of features that were released in Pylake v1.8.0.

Automatic fitting ranges

When fitting force calibration spectra, it is important to exclude regions of the power spectrum with a poor signal-to-noise ratio. For systems that have a force sensor with a factory calibrated frequency response, we can now automatically select an appropriate fit range by passing the extra parameter corner_frequency_factor to calibrate_force().

This parameter sets the fitting range from 0.1 times below to corner_frequency_factor times above the corner frequency. This approach helps exclude regions of the spectrum that may be affected by low power or other artifacts during fitting:

calibration = lk.calibrate_force(volts.data, **calibration_params, corner_frequency_factor=4)
calibration.plot(data_range=(5, 23000))
plt.title(f"Stiffness = {calibration.stiffness:.2f}");

Note that the final fitting range is always constrained by the user-defined initial fit range.

For fits obtained with Bluelake using automatic fitting ranges, the user defined initial fitting ranges and used corner frequency factor can be found in initial_fit_range and corner_frequency_factor, while the iteratively determined fitting range can be found in fit_range.

For more information, please refer to the updated tutorial.

Other changes

For a full list of all the changes, please refer to the full changelog.

Happy Pylake-ing!