Wheat.dat: Data for a 1976 experiment to investigate 25 varieties of...
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Wheat.dat R Documentation
Data for a 1976 experiment to investigate 25 varieties of wheat
Description
The data appears in Gilmour et al. (1995) and is from a field experiment designed to compare the
performance of 25 varieties of spring wheat. An analysis of it using asreml is presented by
Butler et al. (2023, Section 7.6), although they suggest that it is a barley experiment.
It is used in the Wheat vignettes [Enter vignette(package = "asremlPlus")] as an
executable example of the use of the asremlPlus to analyse a data set.
The experiment was conducted at Slate Hall Farm, UK, in 1976 and was designed as
a balanced lattice square with 6 replicates laid out in a 10 \times 15 rectangular
grid. The columns in the data frame are: Rep, Row, Column, WithinColPairs, Variety, yield.
The response variable is the grain yield.
Usage
data(Wheat.dat)
Format
A data.frame containing 150 observations of 6 variables.
Author(s)
Chris Brien
Source
Butler, D. G., Cullis, B. R., Gilmour, A. R., Gogel, B. J. and
Thompson, R. (2023). ASReml-R Reference Manual Version 4.2.
VSN International Ltd, https://asreml.kb.vsni.co.uk/.
Gilmour, A. R., et al. (1995) Average Information REML: An efficient algorithm for
variance parameter estimation in linear mixed models. Biometrics,
51, 1440-1450.
asremlPlus documentation built on April 12, 2025, 1:23 a.m.
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| Wheat.dat | R Documentation |
Data for a 1976 experiment to investigate 25 varieties of wheat
Description
The data appears in Gilmour et al. (1995) and is from a field experiment designed to compare the
performance of 25 varieties of spring wheat. An analysis of it using asreml is presented by
Butler et al. (2023, Section 7.6), although they suggest that it is a barley experiment.
It is used in the Wheat vignettes [Enter vignette(package = "asremlPlus")] as an
executable example of the use of the asremlPlus to analyse a data set.
The experiment was conducted at Slate Hall Farm, UK, in 1976 and was designed as
a balanced lattice square with 6 replicates laid out in a 10 \times 15 rectangular
grid. The columns in the data frame are: Rep, Row, Column, WithinColPairs, Variety, yield.
The response variable is the grain yield.
Usage
data(Wheat.dat)Format
A data.frame containing 150 observations of 6 variables.
Author(s)
Chris Brien
Source
Butler, D. G., Cullis, B. R., Gilmour, A. R., Gogel, B. J. and Thompson, R. (2023). ASReml-R Reference Manual Version 4.2. VSN International Ltd, https://asreml.kb.vsni.co.uk/.
Gilmour, A. R., et al. (1995) Average Information REML: An efficient algorithm for variance parameter estimation in linear mixed models. Biometrics, 51, 1440-1450.
R Package Documentation
Browse R Packages
We want your feedback!
Note that we can't provide technical support on individual packages. You should contact the package authors for that.
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