niondata 15.6.2

A data processing library for Nion Swift.

Nion Data

The Nion Data library (used in Nion Swift)

NionData is the data library for Nion Swift.

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• Changelog

Changelog (niondata)

15.6.2 (2024-01-02)

• Add power function (xdata.power).

• Add radial profile function (xdata.radial_profile).

• Improve handing of invalid inverse coordinates (1/0).

• Add support for computing the phase of a complex array (thanks Luc J Bourhis).

• Improve performance (eliminate some unnecessary metadata dict copying)

15.6.1 (2023-10-23)

• Minor update for typing compatibility.

15.6.0 (2023-08-17)

• Reapply DataMetadata read-only accessors change.

• Make read-only accessors to all DataMetadata properties instead of having them be read/write.

0.15.5 (2023-06-21)

• Revert breaking change: DataMetadata read-only accessors.

0.15.4 (2023-06-19)

• Introduce rebin_factor xdata function.

• Carry through intensity calibration during FFT/IFFT.

• Add copy magic method to data metadata.

• Make read-only accessors to all DataMetadata properties instead of having them be read/write.

• Require Python 3.9 or higher.

0.15.3 (2022-10-03)

• Add is_valid method to calibrations and use when converting to strings.

0.15.2 (2022-09-13)

• Add low level functions for general multi-dimensional processing.

0.15.1 (2022-07-25)

• Use scipy.fft for FFT’s for better/consistent performance.

0.15.0 (2022-02-28)

• Add axis_coordinates function to generate coordinate values from calibrated xdata.

• Simplify data and metadata by eliminating unloading capability (no effect on public API).

0.14.3 (2022-02-18)

• Fix issue where timezone/timezone_offset could get set to invalid values.

• Improve Gaussian blur to handle RGB.

0.14.2 (2022-01-03)

• Improve compatibility with HDF5 backed data (use numpy.copy instead of d.copy).

0.14.1 (2021-12-13)

• Enable support for Python 3.10.

• Fix issue for cross correlation using only first image.

• Fix regression with template register using rounded position.

• Extend sequence trim/integrate to work on sequences of collections.

• Fix half-pixel offset in register_template.

• Allow a mask in register_template for fine-tuning maximum finding.

0.14.0 (2021-11-10)

• Enable strict typing.

• Drop support for Python 3.7.

• Add auto-thresholding functions.

0.13.15 (2021-05-26)

• Optimize element data for sequence + collection case.

• Change sub-pixel registration method to parabola fit to improve speed.

0.13.14 (2021-03-12)

• Add affine transform function and optional order parameter to warp.

• Allow zero-dimensioned (scalar) data and metadata objects.

0.13.13 (2020-12-08)

• Make special case of C(1) D(1) < 16 from element data function optional.

0.13.12 (2020-10-06)

• Fixed RGB issues when data backed by h5py array instead of numpy array.

• Changed rescale to take a new parameter ‘in_range’.

• Changed rgba/rgb functions to clip data to 0, 255.

• Split display functions into element and scalar functions.

0.13.11 (2020-08-31)

• Introduce calibrated coordinates and reference frames (preliminary).

• Improve handling of NaNs in rebin_1d.

• Add xdata function rebin_image.

• Fix issue with bounds when rotating data.

• Fix issues with concatenate and data descriptor.

• Add xdata functions to split/join sequences.

• Add template matching functions to xdata.

• Make pick functions work for sequences of spectrum images.

0.13.10 (2020-02-26)

• Change shift/align functions to use spline-1st-order; add Fourier variants as alternative.

• Fix calibration bug in xdata concatenate (and some cases of hstack, vstack).

• Add function to generate elliptical masks.

• Change FFT to put calibration origin at 0.5, 0.5 pixels from center.

0.13.9 (2019-11-27)

• Improve handling of squeeze/calibration for sequence measurements.

• Add new navigation properties (combo of is_sequence and collection) to data.

• Support slicing on RGB sequences (for display data).

0.13.8 (2019-10-24)

• Added optional registration area bounds to align and register functions.

0.13.7 (2019-02-27)

• Added mean function. Add keepdim param to mean/sum. Allow negative indices.

0.13.6 (2018-12-28)

• Fix display RGB calculation on integer images.

• Add methods for better control of data ref count.

0.13.5 (2018-12-11)

• Add setters for timezone, timezone_offset, and timestamp.

0.13.4 (2018-11-13)

• Add measure_relative_translation function to xdata. Utilize in align.

• Generalize align and register sequence to accept any combo of sequence and collection dimensions.

• Provide more descriptive data dimensions string.

0.13.3 (2018-06-15)

• Fix squeeze to not remove last datum dimension.

• Add re-dimension function (changes data description, keeps data layout in memory the same).

• Ensure that data_descriptor is a copy, not a reference, when accessed from DataAndMetadata.

• Add calibration and data_descriptor creation methods to xdata_1_0.

• Change crop to always produce the same size crop, even if out of bounds. Fill out of bounds with zero.

• Add crop_rotated to handle crop with rotation (slower).

0.13.2 (2018-05-23)

• Automatically promote ndarray and constants (where possible) to xdata in operations.

• Fix FFT-1D scaling and shifting inconsistency.

• Add average_region function (similar to sum_region).

0.13.1 (2018-05-21)

• Fix timezone bug.

0.13.0 (2018-05-10)

• Initial version online.