R: Meuse river data set - original, full data set

meuse.all {gstat} | R Documentation

## Meuse river data set – original, full data set

### Description

This data set gives locations and top soil heavy metal concentrations (ppm), along with a number of soil and landscape variables, collected in a flood plain of the river Meuse, near the village Stein. Heavy metal concentrations are bulk sampled from an area of approximately 15 m x 15 m.

### Usage

    data(meuse.all)

### Format

This data frame contains the following columns:

sample

  sample number

x

  a numeric vector; x-coordinate (m) in RDM (Dutch topographical map coordinates)

y

  a numeric vector; y-coordinate (m) in RDM (Dutch topographical map coordinates)

cadmium

  topsoil cadmium concentration, ppm.; note that zero cadmium values in the original data set have been shifted to 0.2 (half the lowest non-zero value)

copper

  topsoil copper concentration, ppm.

lead

  topsoil lead concentration, ppm.

zinc

  topsoil zinc concentration, ppm.

elev

  relative elevation

om

  organic matter, as percentage

ffreq

  flooding frequency class

soil

  soil type

lime

  lime class

landuse

  landuse class

dist.m

  distance to river Meuse (metres), as obtained during the field survey

in.pit

  logical; indicates whether this is a sample taken in a pit

in.meuse155

  logical; indicates whether the sample is part of the `meuse` (i.e., filtered) data set; in addition to the samples in a pit, an sample (139) with outlying zinc content was removed

in.BMcD

  logical; indicates whether the sample is used as part of the subset of 98 points in the various interpolation examples of Burrough \& McDonnell

### Note

`sample` refers to original sample number. Eight samples were left out because they were not indicative for the metal content of the soil. They were taken in an old pit. One sample contains an outlying zinc value, which was also discarded for the meuse (155) data set.

### Author(s)

The actual field data were collected by Ruud van Rijn and Mathieu Rikken; data compiled for R by Edzer Pebesma

### References

P.A. Burrough, R.A. McDonnell, 1998. Principles of Geographical Information Systems. Oxford University Press.

http://www.gstat.org/

### See Also

meuse.alt

### Examples

    data(meuse.all)
    summary(meuse.all)

[Package gstat version 2.0-3 Index]