satfruit {PASWR}R Documentation

Fruit Trees

Description

To estimate the total surface occupied by fruit trees in 3 small areas (R63, R67, and R68) of Navarra (Spain) in 2001, a sample of 47 square segments has been taken. The experimental units are square segments or quadrats of 4 hectares, obtained by random sampling after overlaying a square grid on the study domain. Data are used in Case Study: Fruit Trees, Chapter 12.

Usage

satfruit

Format

A data frame with 47 observations on the following 17 variables:

QUADRAT
number of the sampled segment or quadrat
SArea
the small area, a factor with levels R63, R67, and R68
WH
area classified as wheat in sampled segment
BA
area classified as barley in sampled segment
NAR
area classified as non arable in sampled segment
COR
area classified as corn in sampled segment
SF
area classified as sunflower in sampled segment
VI
area classified as vineyard in sampled segment
PS
area classified as grass in sampled segment
ES
area classified as asparagus in sampled segment
AF
area classified as lucerne in sampled segment
CO
area classified as rape (Brassica Napus) in sampled segment
AR
area classified as rice in sampled segment
AL
area classified as almonds in sampled segment
OL
area classified as olives in sampled segment
FR
area classified as fruit trees in sampled segment
OBS
the observed area of fruit trees in sampled segment

Source

Militino, A. F., et. al. (2006) “Using Small Area Models to Estimate the Total Area Occupied by Olive Trees.” Journal of Agricultural, Biological and Environmental Statistics, 11: 450-461.

References

Ugarte, M. D., Militino, A. F., and Arnholt, A. T. (2008) Probability and Statistics with R. Chapman & Hall/CRC.

Examples

attach(satfruit)
pairs(satfruit[,15:17])
detach(satfruit)

[Package PASWR version 1.0 Index]