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 and 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.
See Also
Examples
data(meuse.all)
summary(meuse.all)