The farms data frame has 20 rows and 4 columns. The rows are farms
on the Dutch island of Terschelling and the columns are factors
describing the management of grassland.
Usage
farms
Format
This data frame contains the following columns:
Mois
Five levels of soil moisture – level 3 does not occur at these 20 farms.
Grassland use (U1 = hay production, U2 =
intermediate, U3 = grazing).
Manure
Manure usage – classes C0 to C4.
Source
J.C. Gower and D.J. Hand (1996) Biplots. Chapman & Hall, Table 4.6.
Quoted as from:
R.H.G. Jongman, C.J.F. ter Braak and O.F.R. van Tongeren (1987)
Data Analysis in Community and Landscape Ecology.
PUDOC, Wageningen.
References
Venables, W. N. and Ripley, B. D. (2002)
Modern Applied Statistics with S. Fourth edition. Springer.
Examples
farms.mca <- mca(farms, abbrev = TRUE) # Use levels as names
eqscplot(farms.mca$cs, type = "n")
text(farms.mca$rs, cex = 0.7)
text(farms.mca$cs, labels = dimnames(farms.mca$cs)[[1]], cex = 0.7)
Results
R version 3.3.1 (2016-06-21) -- "Bug in Your Hair"
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> library(MASS)
> png(filename="/home/ddbj/snapshot/RGM3/R_CC/result/MASS/farms.Rd_%03d_medium.png", width=480, height=480)
> ### Name: farms
> ### Title: Ecological Factors in Farm Management
> ### Aliases: farms
> ### Keywords: datasets
>
> ### ** Examples
>
> farms.mca <- mca(farms, abbrev = TRUE) # Use levels as names
> eqscplot(farms.mca$cs, type = "n")
> text(farms.mca$rs, cex = 0.7)
> text(farms.mca$cs, labels = dimnames(farms.mca$cs)[[1]], cex = 0.7)
>
>
>
>
>
> dev.off()
null device
1
>