Computes the within-column ranks of data having one or more detection limits. If multiple limits are present in a column, data are first re-censored at the highest detection limit.
A data frame. Default format is paired =
An option to specify paired =
Returns columns of ranks of censored data in the same order as the paired columns of input data. For 3 chemical parameters, the data frame returned will be R1 R2 R3 where R represents the ranks of the C1 C2 C3 input data accounting for the censoring indicated by columns I1 I2 I3.
Helsel, D.R., 2011. Statistics for Censored Environmental Data using Minitab and R, 2nd ed. John Wiley & Sons, USA, N.J.
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