ri2rt {TargetSearch} | R Documentation

## Retention Time Index to Retention Time convertion

### Description

Convert retention time indices to retention times indices based on observed FAME RI and their standard values.

### Usage

    ri2rt(riTime, rt.observed, ri.standard)

### Arguments

`riTime` | And RI vector or matrix to convert to Retention Time.
`rt.observed` | The observed FAME RT's. It could be a vector or a matrix.
`ri.standard` | The standard RI for each FAME

### Details

This function is the inverse of `rt2ri`.

### Value

The converted RT

### Author(s)

Alvaro Cuadros-Inostroza, Matthew Hannah, Henning Redestig

### See Also

`RIcorrect`, `FAMEoutliers`

### Examples

      # RI standards
      standard <- c(100, 200, 300, 400, 500)
      # observed standard retention times
      observed <- c(10.4, 19.3, 32.4, 40.2, 50.3)
      # a random set of retention times
      RI       <- runif(100,90,600)
      # the corrected RIs
      RT       <- ri2rt(RI, observed, standard)

[Package TargetSearch version 1.42.1 Index]