R: The jura dataset

jura {compositions} | R Documentation

## The jura dataset

### Description

A geochemical dataset from the Swiss Jura.

### Usage

    data(juraset)
    data(jura259)

### Format

A 359x11 or 259x11 dataframe

### Details

The JURA data set provided by J.-P. Dubois, IATE-Paedologie, Ecole Polytechnique Federale de Lausanne, 1015 Lausanne, Switzerland. Spatial coordinates and values of categorial and continuous attributes at the 359 sampled sites. The 100 test locartions are denoted with a star. Rock Types: 1: Argovian, 2: Kimmeridgian, 3: Sequanian, 4: Portlandian, 5: Quaternary. Land uses: 1: Forest, 2: Pasture, 3: Meadow , 4: Tillage

| X | X location coordinate
| Y | Y location coordinate
| Rock | Categorical: rocktype,
| Land | Categorical: land usage
| Cd | element amount,
| Cu | element amount,
| Pb | element amount,
| Co | element amount,
| Cr | element amount,
| Ni | element amount,

All 3-part compositions sum to one.

### Source

AI-Geostats

### References

Atteia, O., Dubois, J.-P., Webster, R., 1994, Geostatistical analysis of soil contamination in the Swiss Jura: Environmental Pollution 86, 315-327

Webster, R., Atteia, O., Dubois, J.-P., 1994, Coregionalization of trace metals in the soil in the Swiss Jura: European Journal of Soil Science 45, 205-218

### Examples

    ## Not run:
    data(juraset)
    X <- with(juraset,cbind(X,Y))
    comp <- acomp(juraset,c("Cd","Cu","Pb","Co","Cr"))
    lrv <- logratioVariogram(comp,X,maxdist=1,nbins=10)
    plot(lrv)

    ## End(Not run)

[Package compositions version 1.40-5 Index]