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# Changelog All notable changes to this project will be documented in this file. ## [Unreleased] ## [1.3.3] - 2018-11-01 ### Added - option to save splines for reuse in UVBeam.interp function ### Changed - improve string handling for uvh5 files - changed top-level import structure to exclude file-specific class (e.g. `UVFITS`, `CALFITS`) and base classes (`UVBase`, `UVParameter`) and to not import utility functions into the top-level namespace ### Deprecated - Support for UVData objects without antenna_positions. Antenna positions will be required in a future version. ## [1.3.2] - 2018-09-27 ### Added - Utility functions to identify redundant baselines (either by baseline or antenna pair) - Reading FHD layout files to get antenna positions - Polarization dict constants and parsing functions in utils.py for mapping between polarization strings and numbers ### Changed - LST array is now optional in uvh5 files - polarization string capitalization was unified throughout: use lower case except for Stokes parameters - integration_time is now a vector of length NBlts instead of a scalar ### Deprecated - Support for FHD inputs without layout files (containing antenna positions). ### Fixed - flags are always returned as a boolean array from `UVData.get_flags` - integration_time, uvw_array and lst_array are now always checked for consistency when adding UVData objects - consistency checks on baseline lengths now uses the uvw_array tolerances ## [1.3.1] - 2018-07-24 ## [1.3] - 2018-07-22 ### Added - compatibility with python 3 (retaining python 2 compatibility) - generic `UVData.read` method for all input file types, including select on read options - partial write support for uvh5 file format - partial read support for uvfits, miriad and uvh5 file formats (including only reading metadata and select on read) - new uvh5 file format: an HDF5 file standard matched to UVData objects - new method to calculate uvws from antenna positions - `UVBeam.get_beam_area` and `UVBeam.get_beam_sq_area` functions to calculate beam integrals, including for pseudo-Stokes beams - beam interpolation methods, to any set of points and to healpix pixel centers - a script to renumber antennas for CASA compatiblity if there are fewer than 256 antennas but numbers higher than that - memo describing the beam fits file format - method to peak normalize UVBeam objects - support for reading FHD calibrations into UVCal objects - support for sky-based calibration metadata in UVCal and the calfits file format - method to convert E-field beams to power beams - `UVData.get_ENU_antpos` method to get ENU coordinates from antenna positions - support for `extra_keywords` on UVCal objects ### Changed - Major overhaul of phasing code, see the phasing memo in docs/references for more details - Make all earth location coordinate conversions use same axes order (n_points, 3) - replaced `ant_pair_nums` keyword in `UVData.select` and partial read methods with `bls` which supports lists like [(0,1,'xx'), (2,3,'yy')] - extracted miriad wrappers from aipy, removing aipy as a dependency ### Fixed - Fixed error when combining auto-correlation only and cross-correlation only UVData objects - Fixed error with the `UVData.select` function using a single antenna name - Fixed bugs with `UVData.get_data`, `UVData.get_flags`, and `UVData.get_nsamples` for conjugated baseline polarizations - Fixed a bug that caused a memory error in `UVData.write_uvfits` - Fixed bugs in interpreting the uvw direction convention for uvfits - Fixed a bug in reading azimuth locations from CST beam files - Fixed a bug reading in single frequency uvfits files - Fixed a bug in reading MWA Cotter measurement sets - Fixed units errors in cal fits files - Fixed a serious bug where data was overwritten in the add functions if the axes were out of canonical order - Fixed scrambled data ordering in add function ## [1.2.1] - 2018-11-09 ### Fixed - Fixed a bug in parsing frequencies from CST file names ## [1.2] - 2018-11-08 ### Added - support doctest in the tutorial - utility functions for converting between Jones numbers and polarization strings - support for `antdiam` variable in miriad files - module for reading a CST file into a UVBeam object - utility functions for converting to rotated ECEF coordinates from ECEF coordinates - support reading in a list of calfits files - include `extra_keywords` to miriad files - `__add__` method for UVCal objects - `antenna_diameters` value to UVData objects - `parse_ants` method on UVData objects - `x_orientation` value to UVData objects - "smart slicing" functionality to UVData objects - convenience methods on UVData objects for easily getting data and metadata - UVBeam object - in-place selection for UVData objects - `total_quality_array` value on UVCal objects - `__add__` method for UVData objects - utility functions for converting to local ENU coordinates from ECEF coordinates - `convert_to_gain` method on UVCal delay-type objects - read-only support for CASA measurement sets into UVData objects - `select` method on UVCal objects ### Changed - antenna names in miriad saved as strings instead of arrays of ASCII hex values ### Fixed - baseline-time axis mis-ordering in add function - handling of antenna positions in miriad and uvfits files - selecting autocorrelation data from UVData objects - indexing of spectral windows in calfits files - handling of `total_quality_array` in UVCal objects when selecting a subset of data ## [1.1] - 2017-04-14 (historical information needs to be filled in)
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