Nests data set in preparation for calibration calculations. Use the
group_by parameter to group analyses as appropriate for calibration. Use iso_unnest_data to easily pull out additional columns from the nested data frame in
all_data at any point before, during or after calibration.
iso_prepare_for_calibration(dt, group_by = NULL, quiet = default(quiet))
what to group by for indidual calibration calculations (use c(...) to select multiple) - set
whether to display (quiet=FALSE) or silence (quiet = TRUE) information messages.
a nested data set with the
group_by columns out front and the remaining data in a new nested column named