meuse {sp} | R Documentation

## Meuse river 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)

### Format

This data frame contains the following columns:

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
dist
  distance to river Meuse; obtained from the nearest cell in meuse.grid, which in turn was derived by a spread (spatial distance) GIS operation, therefore it is accurate up to 20 metres; normalized $[0,1]$
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

### Note

row.names refer to the original sample number

### Author(s)

### References

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

http:/www.gstat.org/

### Examples

    data(meuse)
    summary(meuse)

[Package sp version 0.7-12 Index]