Man pages for dataprep
Fast, Efficient, and Versatile Data Preprocessing and Reshaping with 'C++', 'OpenMP' & 'SIMD'

balance_panelBalance panel data
bin_dataDiscretize continuous variables into bins
clean_stringsClean and standardize character columns
condextrRemove outliers using point-by-point weighed outlier removal...
create_lagsCreate lagged variables
dataExample data (particle number concentrations in SMEAR I...
data1Example data (aggregated particle number concentrations,...
dataprepData preprocessing with multiple steps in one function
dataprep-packagedataprep: Fast, Efficient, and Versatile Data Preprocessing...
data_reportGenerate a simple data quality report
day_night_flagDay/night flag
dcastCast a long-format data.frame into a wide format
decompose_tsSimple time series decomposition
deduplicateRemove duplicate observations
descdataFast descriptive statistics
descplotView descriptive statistics via plot
detect_outliersDetect outliers using multiple methods
detrend_tsRemove linear trend from time series
drift_detectSensor drift detection
dry_runSimulate preprocessing and report changes without modifying...
encode_categoricalEncode categorical variables
filter_high_corRemove highly correlated variables
filter_low_varRemove low-variance (near-constant) variables
impute_missingImpute missing values
log_returnsLogarithmic returns for financial time series
meltFast wide-to-long data reshaping with flexible ID/measure...
na_diagnoseDiagnose missing value patterns in data
obsedeleDelete observations with excessive consecutive missing values
optisoluFind optimal combination of interval and times for condextr
percdataCalculate top and bottom percentiles of selected variables
percoutlTraditional percentile-based outlier removal
percplotPlot top and bottom percentiles of selected variables
phys_filterPhysical limit filtering
prep_fitBuild a preprocessing plan on training data to prevent data...
prep_transformApply a preprocessing plan to new data
remove_diurnal_cycleRemove diurnal cycle
resample_timeResample time series to a coarser period
roll_applyApply rolling window statistics
sample_dataRandom sampling with optional stratification
season_flagSeason flag
shorvaluInterpolation with values to refer to within short periods
transform_dataTransform and standardize numeric variables
validate_dataValidate data against a set of rules
varideleDelete variables containing too many missing values
winsorizeWinsorize outliers by capping extreme values
zeronaTurn zeros to missing values
dataprep documentation built on Oct. 1, 2026, 5:07 p.m.