0.13 (Jul 26, 2019)#
Summary#
Released Jul 26, 2019
15 contributors
2 months of work
72 pull requests (not all listed below)
What’s new?#
The Gammapy v0.13 release includes many bug-fixes, a lot of clean-up work and some new features.
Gammapy v0.13 implements a new SpectralGaussian
and PLSuperExpCutoff4FGL
model. To support binned simulation of counts data in a uniform
way MapDataset.fake()
, SpectrumDataset.fake()
and SpectrumDatasetOnOff.fake()
methods were implemented, which simulate binned counts maps and spectra from models.
In addition a nice string representations for all of the dataset classes was implemented
together with convenience functions to compute residuals using different methods on all
of them. The algorithm and API of the current LightCurveEstimator
was changed to
use datasets. Now it is possible to compute lightcurves using spectral as well
as cube based analyses. The definition of the position angle of the SkyEllipse
model
was changed to follow IAU conventions.
The handling of sky regions in Gammapy was unified as described in PIG 10.
For convenience regions can now also be created from DS9 region strings. The clean-up
process of gammapy.spectrum
was continued by removing the PHACountsSpectrum
class, which is now fully replaced by the SpectrumDatasetOnOff
class. The
Energy
and EnergyBounds
classes were also removed. Grids of energies can be
created and handled directly using the MapAxis
object now.
The algorithm to compute solid angles for maps was fixed, so that it gives correct
results for WCS projections even with high spatial distortions. Standard analyses
using TAN or CAR projections are only affected on a <1% level. Different units
for the energy axis of the counts and exposure map in a MapDataset
are now
handled correctly.
The recommended conda environment for Gammapy v0.13 was updated. It now relies on Python 3.7, Ipython 7.5, Scipy 1.3, Matplotlib 3.1, Astropy 3.1, and Healpy 1.12. These updates should be backwards compatible. Scripts and notebooks should run and give the same results.
Contributors#
In alphabetical order by first name:
Atreyee Sinha
Axel Donath
Brigitta Sipocz
Bruno Khelifi
Christoph Deil
Fabio Pintore
Fabio Acero
Kaori Nakashima
José Enrique Ruiz
Léa Jouvin
Luca Giunti
Quentin Remy
Régis Terrier
Silvia Manconi
Yu Wun Wong
Pull requests#
This list is incomplete. Small improvements and bug fixes are not listed here.
See the complete Gammapy v0.13 merged pull requests list on GitHub.
[#2296] Implement model YAML serialisation (Quentin Remy)
[#2310] Remove old
LightCurveEstimator
class (Axel Donath)[#2305] Remove
SpectrumSimulation
class (Axel Donath)[#2300] Change to IAU convention for position angle in SkyEllipse model (Luca Giunti)
[#2298] Implement
.fake()
methods on datasets (Léa Jouvin)[#2297] Implement Fermi 4FGL catalog spectral models and catalog (Kaori Nakashima & Yu Wun Wong)
[#2294] Fix pulsar spin-down model bug (Silvia Manconi)
[#2289] Add
gammapy/utils/fitting/sampling.py
(Fabio Acero)[#2287] Implement
__str__
methoda for dataset (Léa Jouvin)[#2278] Refactor class
CrabSpectrum
in a function (Léa Jouvin)[#2277] Implement GTI union (Régis Terrier)
[#2276] Fix map pixel solid angle computation (Axel Donath)
[#2272] Remove
SpectrumStats
class (Axel Donath)[#2264] Implement
MapDataset
FITS I/O (Axel Donath)[#2262] Clean up sky region select code (Christoph Deil)
[#2259] Fix
Fit.minos_contour
method for frozen parameters (Axel Donath)[#2257] Update astropy-helpers to v3.2.1 (Brigitta Sipocz)
[#2254] Add select_region method for event lists (Régis Terrier)
[#2250] Remove
PHACountsSpectrum
class (Axel Donath)[#2244] Implement
SpectralGaussian
model class (Léa Jouvin)[#2243] Speed up mcmc_sampling tutorial (Fabio Acero)
[#2240] Remove use of NDDataArray from CountsSpectrum (Axel Donath)
[#2239] Remove GeneralRandom class (Axel Donath)
[#2238] Implement
MapEventSampler
class (Fabio Pintore)[#2237] Remove
Energy
andEnergyBounds
classes (Axel Donath)[#2235] Remove unused functions in stats/data.py (Régis Terrier)
[#2230] Improve spectrum/models.py coverage (Régis Terrier)
[#2229] Implement
InverseCDFSampler
class (Fabio Pintore)[#2217] Refactor gammapy download (José Enrique Ruiz)
[#2206] Remove unused map iter_by_pix and iter_by_coord methods (Christoph Deil)
[#2204] Clean up
gammapy.utils.random
(Fabio Pintore)[#2200] Update astropy_helpers to v3.2 (Brigitta Sipocz)
[#2192] Improve
gammapy.astro
code and tests (Christoph Deil)[#2129] PIG 10 - Regions (Christoph Deil)
[#2089] Improve
ReflectedRegionsFinder
class (Bruno Khelifi)