Meuse river data set – original, full data set
meuse.all.RdThis 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
Author
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.
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.
Examples
data(meuse.all)
summary(meuse.all)
#> sample x y cadmium
#> Min. : 1.00 Min. :178605 Min. :329714 Min. : 0.000
#> 1st Qu.: 41.75 1st Qu.:179358 1st Qu.:330771 1st Qu.: 0.800
#> Median : 82.50 Median :179945 Median :331558 Median : 1.900
#> Mean : 82.50 Mean :179989 Mean :331614 Mean : 3.109
#> 3rd Qu.:123.25 3rd Qu.:180626 3rd Qu.:332410 3rd Qu.: 3.725
#> Max. :164.00 Max. :181390 Max. :333611 Max. :18.100
#>
#> copper lead zinc elev
#> Min. : 14.00 Min. : 27.00 Min. : 107.0 Min. : 0.000
#> 1st Qu.: 23.00 1st Qu.: 68.75 1st Qu.: 191.8 1st Qu.: 7.390
#> Median : 29.50 Median :116.00 Median : 307.5 Median : 8.124
#> Mean : 39.42 Mean :148.55 Mean : 464.6 Mean : 7.775
#> 3rd Qu.: 48.00 3rd Qu.:201.75 3rd Qu.: 662.5 3rd Qu.: 8.915
#> Max. :128.00 Max. :654.00 Max. :1839.0 Max. :10.520
#>
#> dist.m om ffreq soil
#> Min. : 10.0 Min. : 1.000 Min. :1.000 Min. :1.000
#> 1st Qu.: 80.0 1st Qu.: 5.000 1st Qu.:1.000 1st Qu.:1.000
#> Median : 270.0 Median : 6.550 Median :1.000 Median :1.000
#> Mean : 294.2 Mean : 7.291 Mean :1.604 Mean :1.463
#> 3rd Qu.: 450.0 3rd Qu.: 8.950 3rd Qu.:2.000 3rd Qu.:2.000
#> Max. :1000.0 Max. :17.000 Max. :3.000 Max. :3.000
#> NA's :2
#> lime landuse in.pit in.meuse155 in.BMcD
#> Min. :0.0000 W :54 Mode :logical Mode :logical Mode :logical
#> 1st Qu.:0.0000 Ah :42 FALSE:156 FALSE:9 FALSE:66
#> Median :0.0000 Am :22 TRUE :8 TRUE :155 TRUE :98
#> Mean :0.2988 Fw :10
#> 3rd Qu.:1.0000 Ab : 8
#> Max. :1.0000 (Other):27
#> NA's : 1