lsst.meas.base.diaCalculationPlugins.LinearFitDiaPsfFlux Class Reference

Inheritance diagram for lsst.meas.base.diaCalculationPlugins.LinearFitDiaPsfFlux:

Public Member Functions
	getExecutionOrder (cls)
	calculate (self, diaObjects, diaSources, filterDiaSources, band, **kwargs)

Static Public Attributes
	ConfigClass = LinearFitDiaPsfFluxConfig
list	outputCols = ["psfFluxLinearSlope", "psfFluxLinearIntercept"]
str	plugType = "multi"
bool	needsFilter = True

Detailed Description

Compute fit a linear model to flux vs time.

Definition at line 782 of file diaCalculationPlugins.py.

Member Function Documentation

calculate()

lsst.meas.base.diaCalculationPlugins.LinearFitDiaPsfFlux.calculate	(		self,
			diaObjects,
			diaSources,
			filterDiaSources,
			band,
		**	kwargs )

Compute fit a linear model to flux vs time.

Parameters
----------
diaObject : `dict`
    Summary object to store values in.
diaSources : `pandas.DataFrame`
    DataFrame representing all diaSources associated with this
    diaObject.
filterDiaSources : `pandas.DataFrame`
    DataFrame representing diaSources associated with this
    diaObject that are observed in the band pass ``band``.
band : `str`
    Simple, string name of the filter for the flux being calculated.
**kwargs
    Any additional keyword arguments that may be passed to the plugin.

Reimplemented from lsst.meas.base.diaCalculation.DiaObjectCalculationPlugin.

Definition at line 798 of file diaCalculationPlugins.py.

                  **kwargs):
        """Compute fit a linear model to flux vs time.
 
        Parameters
        ----------
        diaObject : `dict`
            Summary object to store values in.
        diaSources : `pandas.DataFrame`
            DataFrame representing all diaSources associated with this
            diaObject.
        filterDiaSources : `pandas.DataFrame`
            DataFrame representing diaSources associated with this
            diaObject that are observed in the band pass ``band``.
        band : `str`
            Simple, string name of the filter for the flux being calculated.
        **kwargs
            Any additional keyword arguments that may be passed to the plugin.
        """
 
        mName = "{}_psfFluxLinearSlope".format(band)
        if mName not in diaObjects.columns:
            diaObjects[mName] = np.nan
        bName = "{}_psfFluxLinearIntercept".format(band)
        if bName not in diaObjects.columns:
            diaObjects[bName] = np.nan
 
        def _linearFit(df):
            tmpDf = df[~np.logical_or(
                np.isnan(df["psfFlux"]),
                np.logical_or(np.isnan(df["psfFluxErr"]),
                              np.isnan(df["midpointMjdTai"])))]
            if len(tmpDf) < 2:
                return pd.Series({mName: np.nan, bName: np.nan})
            fluxes = tmpDf["psfFlux"].to_numpy()
            errors = tmpDf["psfFluxErr"].to_numpy()
            times = tmpDf["midpointMjdTai"].to_numpy()
            A = np.array([times / errors, 1 / errors]).transpose()
            m, b = lsq_linear(A, fluxes / errors).x
            return pd.Series({mName: m, bName: b})
 
        diaObjects.loc[:, [mName, bName]] = filterDiaSources.apply(_linearFit)
 
 

getExecutionOrder()

lsst.meas.base.diaCalculationPlugins.LinearFitDiaPsfFlux.getExecutionOrder

(

cls

)

Used to set the relative order of plugin execution.

    The values returned by `getExecutionOrder` are compared across all
    plugins, and smaller numbers run first.

    Notes
    -----
    `CatalogCalculationPlugin`\s must run with
    `BasePlugin.DEFAULT_CATALOGCALCULATION` or higher.

    All plugins must implement this method with an appropriate run level

Reimplemented from lsst.meas.base.catalogCalculation.CatalogCalculationPlugin.

Definition at line 795 of file diaCalculationPlugins.py.

    def getExecutionOrder(cls):
        return cls.DEFAULT_CATALOGCALCULATION
 

Member Data Documentation

ConfigClass

lsst.meas.base.diaCalculationPlugins.LinearFitDiaPsfFlux.ConfigClass = LinearFitDiaPsfFluxConfig

static

Definition at line 786 of file diaCalculationPlugins.py.

needsFilter

bool lsst.meas.base.diaCalculationPlugins.LinearFitDiaPsfFlux.needsFilter = True

static

Definition at line 792 of file diaCalculationPlugins.py.

outputCols

list lsst.meas.base.diaCalculationPlugins.LinearFitDiaPsfFlux.outputCols = ["psfFluxLinearSlope", "psfFluxLinearIntercept"]

static

Definition at line 790 of file diaCalculationPlugins.py.

plugType

str lsst.meas.base.diaCalculationPlugins.LinearFitDiaPsfFlux.plugType = "multi"

static

Definition at line 791 of file diaCalculationPlugins.py.

---

The documentation for this class was generated from the following file:

• /j/snowflake/release/lsstsw/stack/lsst-scipipe-8.0.0/Linux64/meas_base/g6c1bc301e9+51106c2951/python/lsst/meas/base/diaCalculationPlugins.py