Transform data using a fitted preprocessing pipeline

Apply a fitted preprocessing pipeline to new data. The preprocessing object must have been fitted using fit() or fit_transform() before calling this function.

Usage

transform(object, X, ...)

Arguments

object

A fitted preprocessing object

X

A matrix or data frame to transform

...

Additional arguments passed to methods

Value

The transformed data matrix

See also

fit(), fit_transform(), inverse_transform()

Examples

# Transform new data with fitted preprocessor
X_train <- matrix(rnorm(100), 10, 10)
X_test <- matrix(rnorm(50), 5, 10)

preproc <- center()
fitted_preproc <- fit(preproc, X_train)
X_test_transformed <- transform(fitted_preproc, X_test)