R: These data list the first two principal component scores from...

airpc {sm} | R Documentation

## These data list the first two principal component scores from the aircraft data, which record six characteristics of aircraft designs throughout the twentieth century

### Description

These data list the first two principal component scores from the aircraft data, which record six characteristics of aircraft designs throughout the twentieth century.

The variables are:

`Comp.1:` | first principal component score
`Comp.2:` | second principal component score
`Yr:` | year of first manufacture
`Period:` | a code to indicate one of three broad time periods

The data were collected by P. Saviotti and are described in detail in Saviotti (1996), "Technological Evolution, Variety and Economy", Edward Elgar: Cheltenham.

[Package sm version 2.2-5.4 Index]