lsst.ip.diffim geb961e4c1e+f9439d1e6f
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Public Member Functions | |
getExecutionOrder (cls) | |
__init__ (self, config, name, schema, metadata, logName=None) | |
measureDipoles (self, measRecord, exposure, posExp=None, negExp=None) | |
doClassify (self, measRecord, chi2val) | |
fail (self, measRecord, error=None) | |
Static Public Attributes | |
ConfigClass = DipoleFitPluginConfig | |
DipoleFitAlgorithmClass = DipoleFitAlgorithm | |
int | FAILURE_EDGE = 1 |
int | FAILURE_FIT = 2 |
int | FAILURE_NOT_DIPOLE = 4 |
int | FAILURE_TOO_LARGE = 8 |
Protected Member Functions | |
_setupSchema (self, config, name, schema, metadata) | |
A single frame measurement plugin that fits dipoles to all merged (two-peak) ``diaSources``. This measurement plugin accepts up to three input images in its `measure` method. If these are provided, it includes data from the pre-subtraction posImage (science image) and optionally negImage (template image) to constrain the fit. The meat of the fitting routines are in the class `~lsst.module.name.DipoleFitAlgorithm`. Notes ----- The motivation behind this plugin and the necessity for including more than one exposure are documented in DMTN-007 (http://dmtn-007.lsst.io). This class is named `ip_diffim_DipoleFit` so that it may be used alongside the existing `ip_diffim_DipoleMeasurement` classes until such a time as those are deemed to be replaceable by this.
Definition at line 960 of file dipoleFitTask.py.
lsst.ip.diffim.dipoleFitTask.DipoleFitPlugin.__init__ | ( | self, | |
config, | |||
name, | |||
schema, | |||
metadata, | |||
logName = None ) |
Definition at line 994 of file dipoleFitTask.py.
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protected |
Add fields for the outputs, and save the keys for fast assignment.
Definition at line 1003 of file dipoleFitTask.py.
lsst.ip.diffim.dipoleFitTask.DipoleFitPlugin.doClassify | ( | self, | |
measRecord, | |||
chi2val ) |
Classify a source as a dipole. Parameters ---------- measRecord : TODO: DM-17458 TODO: DM-17458 chi2val : TODO: DM-17458 TODO: DM-17458 Notes ----- Sources are classified as dipoles, or not, according to three criteria: 1. Does the total signal-to-noise surpass the ``minSn``? 2. Are the pos/neg fluxes greater than 1.0 and no more than 0.65 (``maxFluxRatio``) of the total flux? By default this will never happen since ``posFlux == negFlux``. 3. Is it a good fit (``chi2dof`` < 1)? (Currently not used.)
Definition at line 1168 of file dipoleFitTask.py.
lsst.ip.diffim.dipoleFitTask.DipoleFitPlugin.fail | ( | self, | |
measRecord, | |||
error = None ) |
Catch failures and set the correct flags. Fallback on the current slot centroid positions, but set the dipole failure flag, since we attempted to fit the source.
Definition at line 1220 of file dipoleFitTask.py.
lsst.ip.diffim.dipoleFitTask.DipoleFitPlugin.getExecutionOrder | ( | cls | ) |
This algorithm simultaneously fits the centroid and flux, and does not require any previous centroid fit.
Definition at line 988 of file dipoleFitTask.py.
lsst.ip.diffim.dipoleFitTask.DipoleFitPlugin.measureDipoles | ( | self, | |
measRecord, | |||
exposure, | |||
posExp = None, | |||
negExp = None ) |
Perform the non-linear least squares minimization on the putative dipole source. Parameters ---------- measRecord : `lsst.afw.table.SourceRecord` diaSources that will be measured using dipole measurement exposure : `lsst.afw.image.Exposure` Difference exposure on which the diaSources were detected; `exposure = posExp-negExp` If both `posExp` and `negExp` are `None`, will attempt to fit the dipole to just the `exposure` with no constraint. posExp : `lsst.afw.image.Exposure`, optional "Positive" exposure, typically a science exposure, or None if unavailable When `posExp` is `None`, will compute `posImage = exposure + negExp`. negExp : `lsst.afw.image.Exposure`, optional "Negative" exposure, typically a template exposure, or None if unavailable When `negExp` is `None`, will compute `negImage = posExp - exposure`. Notes ----- The main functionality of this routine was placed outside of this plugin (into `DipoleFitAlgorithm.fitDipole()`) so that `DipoleFitAlgorithm.fitDipole()` can be called separately for testing (@see `tests/testDipoleFitter.py`)
Definition at line 1064 of file dipoleFitTask.py.
lsst.ip.diffim.dipoleFitTask.DipoleFitPlugin.centroidKey |
Definition at line 1023 of file dipoleFitTask.py.
lsst.ip.diffim.dipoleFitTask.DipoleFitPlugin.chi2dofKey |
Definition at line 1036 of file dipoleFitTask.py.
lsst.ip.diffim.dipoleFitTask.DipoleFitPlugin.classificationAttemptedFlagKey |
Definition at line 1052 of file dipoleFitTask.py.
lsst.ip.diffim.dipoleFitTask.DipoleFitPlugin.classificationFlagKey |
Definition at line 1048 of file dipoleFitTask.py.
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static |
Definition at line 979 of file dipoleFitTask.py.
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static |
Definition at line 980 of file dipoleFitTask.py.
lsst.ip.diffim.dipoleFitTask.DipoleFitPlugin.edgeFlagKey |
Definition at line 1060 of file dipoleFitTask.py.
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static |
Definition at line 982 of file dipoleFitTask.py.
lsst.ip.diffim.dipoleFitTask.DipoleFitPlugin.FAILURE_EDGE |
Definition at line 1125 of file dipoleFitTask.py.
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static |
Definition at line 983 of file dipoleFitTask.py.
lsst.ip.diffim.dipoleFitTask.DipoleFitPlugin.FAILURE_FIT |
Definition at line 1128 of file dipoleFitTask.py.
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static |
Definition at line 984 of file dipoleFitTask.py.
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static |
Definition at line 985 of file dipoleFitTask.py.
lsst.ip.diffim.dipoleFitTask.DipoleFitPlugin.FAILURE_TOO_LARGE |
Definition at line 1113 of file dipoleFitTask.py.
lsst.ip.diffim.dipoleFitTask.DipoleFitPlugin.flagKey |
Definition at line 1056 of file dipoleFitTask.py.
lsst.ip.diffim.dipoleFitTask.DipoleFitPlugin.fluxKey |
Definition at line 1013 of file dipoleFitTask.py.
lsst.ip.diffim.dipoleFitTask.DipoleFitPlugin.log |
Definition at line 999 of file dipoleFitTask.py.
lsst.ip.diffim.dipoleFitTask.DipoleFitPlugin.nDataKey |
Definition at line 1040 of file dipoleFitTask.py.
lsst.ip.diffim.dipoleFitTask.DipoleFitPlugin.negCentroidKey |
Definition at line 1019 of file dipoleFitTask.py.
lsst.ip.diffim.dipoleFitTask.DipoleFitPlugin.negFluxKey |
Definition at line 1009 of file dipoleFitTask.py.
lsst.ip.diffim.dipoleFitTask.DipoleFitPlugin.orientationKey |
Definition at line 1028 of file dipoleFitTask.py.
lsst.ip.diffim.dipoleFitTask.DipoleFitPlugin.posCentroidKey |
Definition at line 1015 of file dipoleFitTask.py.
lsst.ip.diffim.dipoleFitTask.DipoleFitPlugin.posFluxKey |
Definition at line 1006 of file dipoleFitTask.py.
lsst.ip.diffim.dipoleFitTask.DipoleFitPlugin.separationKey |
Definition at line 1032 of file dipoleFitTask.py.
lsst.ip.diffim.dipoleFitTask.DipoleFitPlugin.signalToNoiseKey |
Definition at line 1044 of file dipoleFitTask.py.