Test Functions

Basic Anomalies

flagMissing	Deprecated since version 2.7.0.
flagIsolated	Flag groups of data that are surrounded by data gaps.
flagJumps	Flag jumps and drops in data.
flagConstants	Flag constant data values.
flagByVariance	Flag low-variance data.
flagPlateau	Flag ofsetted groups of data..

Change Points and Noise

flagChangePoints	Flag values that represent a system state transition.
assignChangePointCluster	Label data where it changes significantly.
flagByScatterLowpass	Flag data noisy data.

Gap filling

interpolateByRolling

Impute NAN with aggregation of context.

Multivariate Analysis

Multivariate outlier detection.

flagLOF	Local Outlier Factor.
flagZScore	Scattering (ZScoring) based outlier detection.

Sampling Alignment

align	Resample data and flags at uniform frequency.
concatFlags	Resample a variables flags and append them to another variables flags.
resample	Sample data at uniform sampling rate.
reindex	Resample data at new index.

Data Products

assignKNNScore	K nearest neighbor scoring.
assignLOF	Assign Local Outlier Factor (LOF).
assignUniLOF	Univariate outlier scoring, based on LOF.
assignZScore	Calculate (rolling) Zscores.
calculatePolynomialResiduals	Residuals from polynomial fit.
calculateRollingResiduals	Residuals from sliding window fit.
fitPolynomial	Fit a polynomial model to the data.
fitLowpassFilter	Filter and smooth data with Butterworth filter.

Drift detection and correction

flagDriftFromNorm	Flags Deviation from central moment.
flagDriftFromReference	Flags data that deviates from a reference.
correctDrift	Correct model defined drifts.
correctRegimeAnomaly	Regimen wise model fitting.
correctOffset	Correct offsets to normal value level.
flagRegimeAnomaly	Flags anomalous regimes regarding to modelling regimes of field.
assignRegimeAnomaly	A function to detect values belonging to an anomalous regime regarding modelling regimes of field.

Flagtools

forceFlags(field[, flag])	Assign specific flag to all periods.
clearFlags(field, **kwargs)	Assign UNFLAGGED to all periods.
flagUnflagged(field[, flag])	Assign flag to all UNFLAGGED periods.
flagDummy(field, **kwargs)	Pass on data and flags.
transferFlags(field, target[, squeeze, ...])	Transfer flags between variables.
andGroup(field[, group, target, flag])	Combine flags via AND operation.
orGroup(field[, group, target, flag])	Combine flags via OR operation.

Generic Functions

processGeneric	Apply custom transformation.
flagGeneric	Apply custom flagging rule.
andGroup	Combine flags via AND operation.
orGroup	Combine flags via OR operation.

Outlier Detection

Univariate Outlier Detection

flagUniLOF	Univariate outlier detection, based on LOF.
flagByStray	Flag outliers with the STRAY Algorithm.
flagOffset	Flag offsetted groups of values.
flagRange	Flag values that exceed fixed bound.
flagLOF	Local Outlier Factor.
flagZScore	Scattering (ZScoring) based outlier detection.
flagPlateau	Flag ofsetted groups of data..

Tools

copyField	Copy data and flags.
dropField	Drop field.
renameField	Rename field.
selectTime	Apply a mask.
plot	Generate plots.