meuse.all {GeoXp} | 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 $15 times 15 m$.
Usage
data(meuse.all)
Format
A data frame with 164 observations on the following 17 variables.
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
- lead topsoil lead concentration, ppm.
zinc
- topsoil zinc concentration, ppm.
elev
- elev relative elevation
dist.m
- distance to river Meuse (metres), as obtained during the field survey
om
- organic matter, as percentage
ffreq
- flooding frequency class
soil
- soil type
lime
- lime class
landuse
- landuse class
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
Details
This data set provides from gstat package.
Source
The actual field data were collected by Ruud van Rijn and Mathieu Rikken; data compiled for R by Edzer J. Pebesma
References
P.A. Burrough, R.A. McDonnell, 1998. Principles of Geographical Information Systems. Oxford University Press, http:/www.gstat.org/
Examples
data(meuse.all)
[Package
GeoXp version 1.2
Index]