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Attach sample metadata to a peak_table

Source: R/attach_metadata.R
attach_metadata.Rd

Matches rows of metadata to samples by name and stores them in the sample_meta slot, in the same order as the rows of peak_table$tab. Samples missing from metadata get NA values, with a warning. Columns already in sample_meta, such as fields added to the chromatograms with chromConverter::add_metadata() (chromConverter 0.11.0 or later), are kept unless metadata replaces them. To replace sample_meta entirely, set peak_table$sample_meta <- NA first.

Usage

attach_metadata(peak_table, metadata, column)

Arguments

peak_table

A peak_table object created by get_peaktable.

metadata

A data.frame (or tibble) of sample metadata.

column

Name of the column in metadata containing sample identifiers, which must be unique and match the row names of peak_table$tab.

Value

A peak_table object with metadata stored in the sample_meta slot.

See also

get_peaktable, normalize_data

Author

Ethan Bass

Examples

data(pk_tab)
path <- system.file("extdata", "Sa_metadata.csv", package = "chromatographR")
meta <- read.csv(path)
pk_tab <- attach_metadata(peak_table = pk_tab, metadata = meta, column="vial")