Action Types

Here is a list of the current actions implemented in analysis_tools. Please look at these carefully before adding new actions to avoid duplication.

Plot actions are covered in a separate section.

Scalar Actions

lsst.analysis.tools.actions.scalar Package

Classes

ApproxFloor(*args, **kw)	Returns the median of the lowest ten values of the sorted input.
CountAction(*args, **kw)	Returns the number of non-NaN entries in the given column.
CountUniqueAction(*args, **kw)	Counts the number of unique rows in a given column.
FracInRange(*args, **kw)	Compute the fraction of a distribution that is between specified minimum and maximum values, and is not NaN.
FracNan(*args, **kw)	Compute the fraction of vector entries that are NaN.
FracThreshold(*args, **kw)	Compute the fraction of a distribution that is above or below a specified threshold.
MaxAction(*args, **kw)	Returns the maximum of the given data.
MeanAction(*args, **kw)	Calculates the mean of the given data.
MedianAction(*args, **kw)	Calculates the median of the given data.
MinAction(*args, **kw)	Returns the minimum of the given data.
SigmaMadAction(*args, **kw)	Calculates the sigma mad of the given data.
StdevAction(*args, **kw)	Calculates the standard deviation of the given data.

Class Inheritance Diagram

Vector Actions

lsst.analysis.tools.actions.vector Package

Classes

AddVector(*args, **kw)	Calculate (A+B).
BandSelector(*args, **kw)	Makes a mask for sources observed in a specified set of bands.
BinnedCorr2Config(*args, **kw)	A Config class that holds some of the parameters supported by treecorr.
CalcBinnedStatsAction(*args, **kw)
CalcE(*args, **kw)	Calculate a complex value representation of the ellipticity.
CalcE1(*args, **kw)	Calculate \(e_1\) (distortion-type) or \(g_1\) (shear-type).
CalcE2(*args, **kw)	Calculate \(e_2\) (distortion-type) or \(g_2\) (shear-type).
CalcEDiff(*args, **kw)	Calculate the difference of two ellipticities as a complex quantity.
CalcRhoStatistics(*args, **kw)	Calculate rho statistics.
CalcShapeSize(*args, **kw)	Calculate a size: \((I_{xx}I_{yy}-I_{xy}^2)^{\frac{1}{4}}\) (determinant radius) or \(\sqrt{(I_{xx}+I_{yy})/2}\) (trace radius).
CalcSn(*args, **kw)	Calculate the signal-to-noise ratio from a single flux vector.
CoaddPlotFlagSelector(*args, **kw)	This default setting makes it take the band from the kwargs.
ConstantValue(*args, **kw)	Return a constant scalar value.
ConvertFluxToMag(*args, **kw)	Turn nano janskies into magnitudes.
ConvertUnits(*args, **kw)	Convert the units of a vector.
DivideVector(*args, **kw)	Calculate (A/B)
DownselectVector(*args, **kw)	Get a vector from KeyedData, apply specified selector, return the shorter Vector.
ExtendednessSelector(*args, **kw)	A selector that picks between extended and point sources.
ExtinctionCorrectedMagDiff(*args, **kw)	Compute the difference between two magnitudes and correct for extinction By default bands are derived from the <band>_ prefix on flux columns, per the naming convention in the Object Table: e.g.
FlagSelector(*args, **kw)	The base flag selector to use to select valid sources for QA.
FractionalDifference(*args, **kw)	Calculate (A-B)/B.
GalaxySelector(*args, **kw)	A selector that picks out galaxies based off of their extendedness values.
GoodDiaSourceSelector(*args, **kw)	Selects good DIA sources from diaSourceTables.
LoadVector(*args, **kw)	Load and return a Vector from KeyedData.
MagDiff(*args, **kw)	Calculate the difference between two magnitudes; each magnitude is derived from a flux column.
MultiCriteriaDownselectVector(*args, **kw)	Get a vector from KeyedData, apply specified set of selectors with AND logic, and return the shorter Vector.
MultiplyVector(*args, **kw)	Calculate (A*B)
PerGroupStatistic(*args, **kw)	Compute per-group statistic values and return result as a vector with one element per group.
RAcosDec(*args, **kw)	Construct a vector of RA*cos(Dec) in order to have commensurate values between RA and Dec.
RangeSelector(*args, **kw)	Selects rows within a range, inclusive of min/exclusive of max.
ResidualWithPerGroupStatistic(*args, **kw)	Compute residual between individual elements of group and the per-group statistic.
SkyObjectSelector(*args, **kw)	Selects sky objects in the given band(s).
SkySourceSelector(*args, **kw)	Selects sky sources from sourceTables.
SnSelector(*args, **kw)	Selects points that have S/N > threshold in the given flux type.
StarSelector(*args, **kw)	A selector that picks out stars based off of their extendedness values.
SubtractVector(*args, **kw)	Calculate (A-B).
ThresholdSelector(*args, **kw)	Return a mask corresponding to an applied threshold.
UnknownSelector(*args, **kw)	A selector that picks out unclassified objects based off of their extendedness values.
VectorSelector(*args, **kw)	Load a boolean vector from KeyedData and return it for use as a selector.
VisitPlotFlagSelector(*args, **kw)	Select on a set of flags appropriate for making visit-level plots (i.e., using sourceTable_visit catalogs).

Class Inheritance Diagram

KeyedData Actions

lsst.analysis.tools.actions.keyedData Package

Classes

AddComputedVector(*args, **kw)	Compute a Vector from the specified VectorAction and add it to a copy of the KeyedData, returning the result.
ChainedKeyedDataActions(*args, **kw)	Run a series of KeyedDataActions and accumulated their output into one KeyedData result.
KeyedDataSelectorAction(*args, **kw)	Extract Vector specified by vectorKeys from input KeyedData and optionally apply selectors to down select extracted vectors.
KeyedScalars(*args, **kw)	Creates an output of type KeyedData, where the keys are given by the identifiers in scalarActions and the values are the results of the corresponding ScalarAction.
StellarLocusFitAction(*args, **kw)	Determine Stellar Locus fit parameters from given input Vectors.

Class Inheritance Diagram