subset_x_values: Subset x values

In specmine: Metabolomics and Spectral Data Analysis and Mining

Subset x values

Description

Selects rows of the dataset by x values or by row index.

Usage

subset_x_values(dataset, variables, by.index = FALSE)

Arguments

dataset	Dataset to subset.
variables	Variables to keep.
by.index	Logical. If TRUE, variables are interpreted as row indexes.

Value

A dataset object with the same structure as the input, where 'dataset$data' contains only the selected variables or row indexes.

Examples

data <- matrix(
  1:9,
  nrow = 3,
  dimnames = list(c("10", "20", "30"), c("s1", "s2", "s3"))
)
metadata <- data.frame(group = c("A", "B", "A"), row.names = c("s1", "s2", "s3"))
dataset <- list(data = data, metadata = metadata)
subset_x_values(dataset, c("10", "30"))

specmine documentation built on Aug. 5, 2026, 5:06 p.m.