cornell {ropls} | R Documentation

## Octane of various blends of gasoline

### Description

Twelve mixture component proportions of the blend are analysed

### Format

A data frame with the following parameters:

- num mixture number

- x1 proportion of component 1

- x2 proportion of component 2

- x3 proportion of component 3

- x4 proportion of component 4

- x5 proportion of component 5

- x6 proportion of component 6

- x7 proportion of component 7 Note: the 7 variables are correlated since they sum up to 1

- y octane (quantitative variable)

### Value

Data frame (numeric type only; the first column can be transformed into row names) with 12 rows and 9 columns corresponding to the 'num'ber of the mixture (column 1), the proportion of each of the 7 'x' components within the mixture (columns 2-8), and the octane indice 'y' (column 9). For details see the 'Format' section above.

### Source

Tenenhaus (1998), Table 6, page 78.

### References

Tenenhaus (1998). La regression PLS: theorie et pratique. Paris: Editions Technip.

[Package ropls version 1.18.8 Index]