LSST Applications
21.0.0-147-g0e635eb1+1acddb5be5,22.0.0+052faf71bd,22.0.0+1ea9a8b2b2,22.0.0+6312710a6c,22.0.0+729191ecac,22.0.0+7589c3a021,22.0.0+9f079a9461,22.0.1-1-g7d6de66+b8044ec9de,22.0.1-1-g87000a6+536b1ee016,22.0.1-1-g8e32f31+6312710a6c,22.0.1-10-gd060f87+016f7cdc03,22.0.1-12-g9c3108e+df145f6f68,22.0.1-16-g314fa6d+c825727ab8,22.0.1-19-g93a5c75+d23f2fb6d8,22.0.1-19-gb93eaa13+aab3ef7709,22.0.1-2-g8ef0a89+b8044ec9de,22.0.1-2-g92698f7+9f079a9461,22.0.1-2-ga9b0f51+052faf71bd,22.0.1-2-gac51dbf+052faf71bd,22.0.1-2-gb66926d+6312710a6c,22.0.1-2-gcb770ba+09e3807989,22.0.1-20-g32debb5+b8044ec9de,22.0.1-23-gc2439a9a+fb0756638e,22.0.1-3-g496fd5d+09117f784f,22.0.1-3-g59f966b+1e6ba2c031,22.0.1-3-g849a1b8+f8b568069f,22.0.1-3-gaaec9c0+c5c846a8b1,22.0.1-32-g5ddfab5d3+60ce4897b0,22.0.1-4-g037fbe1+64e601228d,22.0.1-4-g8623105+b8044ec9de,22.0.1-5-g096abc9+d18c45d440,22.0.1-5-g15c806e+57f5c03693,22.0.1-7-gba73697+57f5c03693,master-g6e05de7fdc+c1283a92b8,master-g72cdda8301+729191ecac,w.2021.39
LSST Data Management Base Package
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Public Member Functions | |
def | __init__ (self, diffim, posImage=None, negImage=None) |
def | fitDipoleImpl (self, source, tol=1e-7, rel_weight=0.5, fitBackground=1, bgGradientOrder=1, maxSepInSigma=5., separateNegParams=True, verbose=False) |
def | fitDipole (self, source, tol=1e-7, rel_weight=0.1, fitBackground=1, maxSepInSigma=5., separateNegParams=True, bgGradientOrder=1, verbose=False, display=False) |
def | displayFitResults (self, footprint, result) |
Public Attributes | |
diffim | |
posImage | |
negImage | |
psfSigma | |
log | |
debug | |
Fit a dipole model using an image difference. See also: `DMTN-007: Dipole characterization for image differencing <https://dmtn-007.lsst.io>`_.
Definition at line 483 of file dipoleFitTask.py.
def lsst.ip.diffim.dipoleFitTask.DipoleFitAlgorithm.__init__ | ( | self, | |
diffim, | |||
posImage = None , |
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negImage = None |
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) |
Algorithm to run dipole measurement on a diaSource Parameters ---------- diffim : `lsst.afw.image.Exposure` Exposure on which the diaSources were detected posImage : `lsst.afw.image.Exposure` "Positive" exposure from which the template was subtracted negImage : `lsst.afw.image.Exposure` "Negative" exposure which was subtracted from the posImage
Definition at line 509 of file dipoleFitTask.py.
def lsst.ip.diffim.dipoleFitTask.DipoleFitAlgorithm.displayFitResults | ( | self, | |
footprint, | |||
result | |||
) |
Display data, model fits and residuals (currently uses matplotlib display functions). Parameters ---------- footprint : TODO: DM-17458 Footprint containing the dipole that was fit result : `lmfit.MinimizerResult` `lmfit.MinimizerResult` object returned by `lmfit` optimizer Returns ------- fig : `matplotlib.pyplot.plot`
Definition at line 884 of file dipoleFitTask.py.
def lsst.ip.diffim.dipoleFitTask.DipoleFitAlgorithm.fitDipole | ( | self, | |
source, | |||
tol = 1e-7 , |
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rel_weight = 0.1 , |
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fitBackground = 1 , |
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maxSepInSigma = 5. , |
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separateNegParams = True , |
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bgGradientOrder = 1 , |
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verbose = False , |
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display = False |
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) |
Fit a dipole model to an input ``diaSource`` (wraps `fitDipoleImpl`). Actually, fits the subimage bounded by the input source's footprint) and optionally constrain the fit using the pre-subtraction images self.posImage (science) and self.negImage (template). Wraps the output into a `pipeBase.Struct` named tuple after computing additional statistics such as orientation and SNR. Parameters ---------- source : `lsst.afw.table.SourceRecord` Record containing the (merged) dipole source footprint detected on the diffim tol : `float`, optional Tolerance parameter for scipy.leastsq() optimization rel_weight : `float`, optional Weighting of posImage/negImage relative to the diffim in the fit fitBackground : `int`, {0, 1, 2}, optional How to fit linear background gradient in posImage/negImage - 0: do not fit background at all - 1 (default): pre-fit the background using linear least squares and then do not fit it as part of the dipole fitting optimization - 2: pre-fit the background using linear least squares (as in 1), and use the parameter estimates from that fit as starting parameters for an integrated "re-fit" of the background as part of the overall dipole fitting optimization. maxSepInSigma : `float`, optional Allowed window of centroid parameters relative to peak in input source footprint separateNegParams : `bool`, optional Fit separate parameters to the flux and background gradient in bgGradientOrder : `int`, {0, 1, 2}, optional Desired polynomial order of background gradient verbose: `bool`, optional Be verbose display Display input data, best fit model(s) and residuals in a matplotlib window. Returns ------- result : `struct` `pipeBase.Struct` object containing the fit parameters and other information. result : `callable` `lmfit.MinimizerResult` object for debugging and error estimation, etc. Notes ----- Parameter `fitBackground` has three options, thus it is an integer:
Definition at line 771 of file dipoleFitTask.py.
def lsst.ip.diffim.dipoleFitTask.DipoleFitAlgorithm.fitDipoleImpl | ( | self, | |
source, | |||
tol = 1e-7 , |
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rel_weight = 0.5 , |
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fitBackground = 1 , |
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bgGradientOrder = 1 , |
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maxSepInSigma = 5. , |
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separateNegParams = True , |
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verbose = False |
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) |
Fit a dipole model to an input difference image. Actually, fits the subimage bounded by the input source's footprint) and optionally constrain the fit using the pre-subtraction images posImage and negImage. Parameters ---------- source : TODO: DM-17458 TODO: DM-17458 tol : float, optional TODO: DM-17458 rel_weight : `float`, optional TODO: DM-17458 fitBackground : `int`, optional TODO: DM-17458 bgGradientOrder : `int`, optional TODO: DM-17458 maxSepInSigma : `float`, optional TODO: DM-17458 separateNegParams : `bool`, optional TODO: DM-17458 verbose : `bool`, optional TODO: DM-17458 Returns ------- result : `lmfit.MinimizerResult` return `lmfit.MinimizerResult` object containing the fit parameters and other information.
Definition at line 534 of file dipoleFitTask.py.
lsst.ip.diffim.dipoleFitTask.DipoleFitAlgorithm.debug |
Definition at line 532 of file dipoleFitTask.py.
lsst.ip.diffim.dipoleFitTask.DipoleFitAlgorithm.diffim |
Definition at line 522 of file dipoleFitTask.py.
lsst.ip.diffim.dipoleFitTask.DipoleFitAlgorithm.log |
Definition at line 529 of file dipoleFitTask.py.
lsst.ip.diffim.dipoleFitTask.DipoleFitAlgorithm.negImage |
Definition at line 524 of file dipoleFitTask.py.
lsst.ip.diffim.dipoleFitTask.DipoleFitAlgorithm.posImage |
Definition at line 523 of file dipoleFitTask.py.
lsst.ip.diffim.dipoleFitTask.DipoleFitAlgorithm.psfSigma |
Definition at line 525 of file dipoleFitTask.py.