Alfalfa {SASxport}R Documentation

Example SAS data set

Description

This data set exists to provide an example file for lookup.xport() and read.xport()

Usage

data(Alfalfa)

Format

A data frame with 40 observations on the following 6 variables.

POP
Population, a factor with levels MAX amd min
SAMPLE
Sample ID (0:5)
REP
Replicate (always 1)
SEEDWT
Seed weight
HARV1
Harvest 1 volume
HARV2
Harvest 2 volume

Details

Population "MAX" has slightly higher harvest volumes (HARV1 and HARV2) than population "min". (Surprise! Shock! Awe!)

Source

The 'Alfalfa.xpt' file was obtained from the R 'foreign' package.

Examples

data(Alfalfa)

# go were the data is...
here <- getwd()
setwd(file.path(.path.package("SASxport"),"data"))

# Description of the file contents
lookup.xport("Alfalfa.xpt")

# Load the file contents
Alfalfa <- read.xport("Alfalfa.xpt")
head(Alfalfa)

# return home
setwd(here)

# Just for fun, plot the data
par(mfrow=c(1,2))
plot( HARV1 ~ POP, data=Alfalfa)
plot( HARV2 ~ POP, data=Alfalfa)




[Package SASxport version 1.2.2 Index]