merge_data_metadata: Merge data and metadata

In specmine: Metabolomics and Spectral Data Analysis and Mining

Merge data and metadata

Description

Merges data and metadata into a data frame.

Usage

merge_data_metadata(
  dataset,
  samples = NULL,
  metadata.vars = NULL,
  x.values = NULL,
  by.index = FALSE
)

Arguments

dataset	Dataset to merge.
samples	Samples to keep.
metadata.vars	Metadata variables to keep.
x.values	X values to keep.
by.index	Logical. If TRUE, x.values are indexes.

Value

A 'data.frame' containing the selected data matrix, transposed so that samples are rows, combined with the selected metadata columns.

Examples

data <- matrix(
  1:6,
  nrow = 2,
  dimnames = list(c("x1", "x2"), c("s1", "s2", "s3"))
)
metadata <- data.frame(
  class = c("A", "B", "A"),
  batch = c(1, 1, 2),
  row.names = c("s1", "s2", "s3")
)
dataset <- list(data = data, metadata = metadata)
merge_data_metadata(dataset, metadata.vars = "class")

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