meuse.all: Meuse river data set - original, full data set

In gstat: Spatial and Spatio-Temporal Geostatistical Modelling, Prediction and Simulation

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 \& 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.

http://www.gstat.org/

See Also

meuse.alt

Examples

data(meuse.all)
summary(meuse.all)

Example output

     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                                                  

gstat documentation built on May 2, 2019, 4:59 p.m.