leafblotch: Percentage leaf area of leaf blotch
In GLMsData: Generalized Linear Model Data Sets
leafblotch R Documentation
Percentage leaf area of leaf blotch
Description
The percentage leaf area of barley infected with leafblotch
Usage
data(leafblotch)
Format
A data frame with 90 observations on the following 3 variables.
Areathe percentage area infected with leaf blotch;
a numeric vector
Sitethe site;
a factor with levels A, B up to I
Varietythe variety of barley;
a factor with levels 1, 2, up to 9
Details
The data give the percentage leaf area of barley infected with
Rhynchosporium secalis, or leaf blotch,
for ten different barley varieties grown at nine different sites.
Source
R. W. M. Wedderburn (1974)
Quasi-likelihood functions, generalized linear models,
and the Gauss-Newton method.
Biometrika,
61(3),
439–447.
References
The data also appear in
McCullagh and Nelder, p 329,
and in
Faraway (2006), Exercise 7.5.
Examples
data(leafblotch)
plot( Area ~ Site, data=leafblotch)
GLMsData documentation built on Aug. 22, 2022, 9:10 a.m.
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| leafblotch | R Documentation |
Percentage leaf area of leaf blotch
Description
The percentage leaf area of barley infected with leafblotch
Usage
data(leafblotch)
Format
A data frame with 90 observations on the following 3 variables.
Areathe percentage area infected with leaf blotch; a numeric vector
Sitethe site; a factor with levels
A,Bup toIVarietythe variety of barley; a factor with levels
1,2, up to9
Details
The data give the percentage leaf area of barley infected with Rhynchosporium secalis, or leaf blotch, for ten different barley varieties grown at nine different sites.
Source
R. W. M. Wedderburn (1974) Quasi-likelihood functions, generalized linear models, and the Gauss-Newton method. Biometrika, 61(3), 439–447.
References
The data also appear in McCullagh and Nelder, p 329, and in Faraway (2006), Exercise 7.5.
Examples
data(leafblotch) plot( Area ~ Site, data=leafblotch)
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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