PAC {chemometrics} | R Documentation

## GC retention indices

### Description

For 209 objects an X-data set (467 variables) and a y-data set (1 variable) is available. The data describe GC-retention indices of polycyclic aromatic compounds (y) which have been modeled by molecular descriptors (X).

### Usage

    data(PAC)

### Format

A data frame with 209 objects and 2 list elements:

`y`
  numeric vector with length 209
`X`
  matrix with 209 rows and 467 columns

### Details

The data can be used for linear and non-linear models.

### Source

K. Varmuza and P. Filzmoser: Introduction to Multivariate Statistical Analysis in Chemeometrics. CRC Press, Boca Raton, FL, 2009.

### References

K. Varmuza and P. Filzmoser: Introduction to Multivariate Statistical Analysis in Chemeometrics. CRC Press, Boca Raton, FL, 2009.

### Examples

    data(PAC)
    names(PAC)

[Package chemometrics version 0.6 Index]