meuse.all: 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)
Arguments
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
References
P.A. Burrough, R.A. McDonnell, 1998. Principles of Geographical Information
Systems. Oxford University Press.