rt2ri: Retention Time to Retention Time Index convertion

Description

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

Usage

rt2ri(rtTime, observed, standard)

Arguments

rtTime

The extracted RT's to convert

observed

The observed FAME RT's

standard

The standard RI for each FAME

Value

The converted RI

Details

Linear interpolation, interpolation outside bounds are done with continued linear interpolation from the last two FAME's

Examples

Run this code

  # 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
  RT       <- runif(100,1,60)	
  # the corrected RIs
  RI       <- rt2ri(RT, observed, standard)