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Print a chrom_list object

Source: R/chrom_list-methods.R
print.chrom_list.Rd

Prints a summary of a chrom_list without displaying the underlying chromatographic data. Attributes that are constant across all chromatograms are collapsed into a single header line, while varying attributes are shown as a table truncated to the first n rows. When a sample holds more than one chromatogram, its traces are printed as a block headed by the sample, and any attribute they all share is shown in that block's header rather than repeated down it.

Usage

# S3 method for class 'chrom_list'
print(
  x,
  n = 10,
  cols = chrom_summary_cols(),
  digits = getOption("digits"),
  ...
)

Arguments

x

A chrom_list object.

n

Integer. Maximum number of chromatograms to show in the table. Defaults to 10.

cols

Character vector of attribute names to report. Defaults to: sample_name, run_datetime, method, detector, wavelength, detector_range, scan_type, polarity, precursor_mz, product_mz, mz_range.

digits

Number of significant digits for numeric metadata. Defaults to getOption("digits"), as for print.data.frame.

...

Additional arguments (currently ignored).

Value

Invisibly returns x.

See also

extract_metadata

Examples

path <- system.file("extdata/ladder.txt", package = "chromConverter")
chroms <- read_chroms(path, format_in = "shimadzu_ascii",
                      find_files = FALSE, progress_bar = FALSE)
print(chroms)
#> A chrom_list with 1 chromatogram
#> name: ladder  |  sample_name: FS19_214  |  run_datetime: 2019-07-18 19:45:56
#>   method: C:\LabSolutions\Data\A Legan\Method files\SPME_sample_1.gcm