unmarked (version 1.4.3)

Switzerland: Swiss landscape data

Description

Spatially-referenced data on elevation, forest cover, and water at a 1km-sq resolution.

Usage

data(Switzerland)

Format

A data frame with 42275 observations on the following 5 variables.

x

Easting (m)

y

Northing (m)

elevation

a numeric vector (m)

forest

a numeric vector (percent cover)

water

a numeric vector (percent cover)

Details

Forest and water coverage (in percent area) was computed using the 1992-97 landcover dataset of the Swiss Federal Statistical Office (http://www.bfs.admin.ch). Median elevation (in metres) was computed using a median aggregation of the digital elevation model of the Swiss Federal Statistical Office.

x and y are the coordinates of the center of each 1km2 pixel.

The coordinate reference system intentionally not specified.

These data can only be used for non-profit projects. Otherwise, written permission must be obtained from the Swiss Federal Statistical Office

Examples

library(lattice)
data(Switzerland)
str(Switzerland)

levelplot(elevation ~ x + y, Switzerland, aspect="iso",
    col.regions=terrain.colors(100))

if (FALSE) {
library(raster)
el.r <- rasterFromXYZ(Switzerland[,c("x","y","elevation")], crs =
"+proj=somerc +lat_0=46.95240555555556 +lon_0=7.439583333333333
+k_0=1 +x_0=600000 +y_0=200000 +ellps=bessel
+towgs84=674.374,15.056,405.346,0,0,0,0 +units=m +no_defs")
plot(el.r)
spplot(el.r)
}