iso_add_standards(dt, stds, match_by = default(std_match_by),
is_std_peak = default(is_std_peak), quiet = default(quiet),
is_standard = NULL)

## Arguments

dt data table standards data frame what column(s) to match the standards by new column that holds information about which ones are standard peaks (i.e. have known isotopic values) whether to display (quiet=FALSE) or silence (quiet = TRUE) information messages. renamed to is_std_peak because the naming caused too much confusion, will be removed in future versions, please use is_std_peak instead

## Value

data frame with standards data frame merged in and the following information column added:

• is standard: a logical TRUE/FALSE indicating which data table entry is a standard