stamford.df: Maximum Daily Ozone Concertrations

In R330: An R package for Stats 330

Description

Daily maximum ozone concertrations at Stamford, Connecticut and Yonkers, New York, during the period 1 May 1974 to 30 September 1974.

Usage

data(stamford.df)

Format

A data frame with 136 observations on the following 2 variables:

days

denotes which day observation occured on

ozone

ozone in parts per billion

Source

Chambers, J. M. et al. Graphical Methods for Data Analysis. p346

References

Chambers, J. M. et al. (1983). Graphical Methods for Data Analysis. Duxbury Press: Boston.

Examples

data(stamford.df)
plot(stamford.df$days, stamford.df$ozone, xlab="Days", ylab="Ozone")
loess.stuff=loess(ozone~days, data=stamford.df, span=0.75)
lines(loess.stuff$x, loess.stuff$fitted)

Example output

Loading required package: s20x
Loading required package: leaps
Loading required package: rgl
Loading required package: lattice
Warning messages:
1: In rgl.init(initValue, onlyNULL) : RGL: unable to open X11 display
2: 'rgl_init' failed, running with rgl.useNULL = TRUE 
3: .onUnload failed in unloadNamespace() for 'rgl', details:
  call: fun(...)
  error: object 'rgl_quit' not found 

R330 documentation built on May 2, 2019, 2:12 p.m.