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Release Notes

Version 0.5.1

August 16th 2024

PetroFit Enhancements

  • Update installation requiements for use with python 3.12. #209

General bug fixes and small changes

  • Update rtd to use ubuntu-22.04. #200
  • update_default_config removed since astropy no longer needs it. #205
  • Update rtd to Use Python 3.11.8. #206
  • Update installation requiements for use with python 3.12. #209
  • Remove astropy_helpers from requirements. #209

Version 0.5.0

August 28th 2023

PetroFit Enhancements

  • Allow users to choose fitters in fit_model. #187
  • Introduce TRFLSQFitter as the default fitter. #187
  • Enable calc_uncertainties for fitting. This allows users to get paramter errors on fits. #187
  • Oversampled PSF in PSFConvolvedModel2D. #187
  • Remove CircleCI and add GitHub CI workflow. #181
  • A new option to address low signal-to-noise ratio issues when measuring r_99 by allowing the use of r_80. While r_80 provides good estimates of r_50 (r_e), it can sometimes result in an overestimation of r_99. To ensure accuracy, correction grids can be utilized to estimate r_99 from r_80. However, we maintain the Petrosian measurement philosophy that correction grids should be reserved for high-precision measurements.
  • Error estimates for all Petrosian Radii according to Strauss et. al 2002 Appendix A.3. #169
  • Saving/reading profiles to/from file. #169
  • Grid generation now has multi-processing support. #169
  • Moffat2D and EllipMoffat2D Deprecated. #157
  • PSFModel has been depreciated and replaced by PSFConvolvedModel2D. #156

General bug fixes and small changes

  • Remove DecisionTreeRegressor. #192
  • Change sklearn to scikit-learn. #174 by @astro-nova
  • Remove kernel key word from segmentation functions since PhotUtils no longer accepts them. #169
  • order_cat moved to segmentation sub-module. #169
  • source_photometry moved to segmentation sub-module. #169
  • make_radius_list moved to utils sub-module. #169
  • Refactor: photometry.flux_to_abmag -> utils.hst_flux_to_abmag. #169
  • Refactor: Move measure_fwhm from utils to modeling.fitting. #169
  • Depreciate calculate_photometic_density. #169
  • Depreciate object_photometry, now its called radial_photometry. #169
  • Depreciate measure_fwhm. #169
  • Change the bkg_sub keywords to bg_sub to match PhotUtils. #158
  • Recenter example PSF #159

Version 0.4.1

August 22nd 2022

PetroFit Enhancements

  • CITATION.rst added to provide citing and credit information. #130
  • segm_mask can now take a list of labels which means it is possible to get multiple unmasked sources using masked_segm_image #143
  • Limits of param bounds in get_default_sersic_bounds changed. #143
    • r_eff min bound set to 1e-3.
    • n min bound set to 0.1.
    • ellip max bound set to 0.99.
  • Add GenSersic2D model, which is a Sersic model with generalized ellipse isophot (boxy) parameter. #145
  • Implement PetroApprox which is a class with no-PSF polynomials which relate profile paramters such as C2080 and Sersic n. #146

General bug fixes and small changes

  • Bug Fix: Example RMS image in docs was not the same size as the example data image. #114
  • Bug Fix: Model attribute bug fix in PSFConvolvedModel2D. #145
  • Print out PSF sum if it is not equal to 1. #145
  • Bug Fix: Change make_catalog kernel_size parameter to odd number. #148

Version 0.4.0

March 26th 2022

Upgrades to fitting sub-module, see below for details.

PetroFit Enhancements

  • Removed outdated petrofit.utils.cutout function. #93
  • model_to_image function upgraded to use astropy.convolution.utils.discretize_model. #95
  • PSFModel has been upgraded to PSFConvolvedModel2D.PSFConvolvedModel2D uses __init__ function to wrap models. PSFModel class has been deprecated and will be removed in v0.5. #100
  • An origin parameter has been added to petrofit.models.make_grid. #100
  • fitting.py and models.py have been moved into a new modeling folder. This allows for all modeling functions and classes to be imported as from petrofit.modeling import .... #100
  • petrofit.modeling.fitting.fit_model can now accept fitting weights, so users can pass fitting weights using rms or error images. #100
  • petrofit.modeling.fitting.plot_fit now displays 3 panel image of fits (input image, model-image, and residual). #100

Version 0.3.1

March 8th 2022

PetroFit Enhancements

  • Removed kcorrect from Docker file. #77
  • Added badges to README.rst.
  • Implemented get_amplitude_at_r function that calculates the amplitude of an image at an isophotal radius. #81
  • Removed outdated fit_plane function. #84
  • Moved requirements from environment.yml to requirements.txt. Though both can be used to install PetroFit, environment.yml is recommended at this time. #72
  • Upgraded circleci resource_class to medium+. #62

General bug fixes and small changes

  • Cleaned up the docs, introduced a CHANGES.mdfile. #77
  • Add release procedure for developers. #70