Janka hardness data

Description

The janka data frame has 36 observations on Australian timber samples.

Usage

data(janka)

Format

This data frame contains the following columns:

dens

a measure of density of the timber.

hardness

the Janka hardness (structural property) of the timber.

Source

Williams, E.J. (1959) Regression Analysis, New York: John Wiley & Sons.

References

Ruppert, D., Wand, M.P. and Carroll, R.J. (2003)
Semiparametric Regression Cambridge University Press.
http://stat.tamu.edu/~carroll/semiregbook/

Examples

library(SemiPar)
data(janka)
attach(janka)
plot(dens,hardness)

Results

R version 3.3.1 (2016-06-21) -- "Bug in Your Hair"
Copyright (C) 2016 The R Foundation for Statistical Computing
Platform: x86_64-pc-linux-gnu (64-bit)

R is free software and comes with ABSOLUTELY NO WARRANTY.
You are welcome to redistribute it under certain conditions.
Type 'license()' or 'licence()' for distribution details.

R is a collaborative project with many contributors.
Type 'contributors()' for more information and
'citation()' on how to cite R or R packages in publications.

Type 'demo()' for some demos, 'help()' for on-line help, or
'help.start()' for an HTML browser interface to help.
Type 'q()' to quit R.

> library(SemiPar)
> png(filename="/home/ddbj/snapshot/RGM3/R_CC/result/SemiPar/janka.Rd_%03d_medium.png", width=480, height=480)
> ### Name: janka
> ### Title: Janka hardness data
> ### Aliases: janka
> ### Keywords: datasets
> 
> ### ** Examples
> 
> library(SemiPar)
> data(janka)
> attach(janka)
> plot(dens,hardness)
> 
> 
> 
> 
> 
> dev.off()
null device 
          1 
>