secrlinear (version 1.2.4)

glymemask: Linear Mask for Water Vole Dataset

Description

Habitat geometry for a trapping study of water voles (Arvicola amphibius) along a river in Oxfordshire, U.K., used in conjunction with the capture dataset arvicola.

Usage

glymemask

Format

A linearmask object (see read.linearmask)

Details

Water voles were trapped monthly from May 1984 to May 1985 along 0.9 km of the River Glyme in Oxfordshire, U.K. (Efford 1985).

The raw data are provided both as a text file and as a shapefile in the `extdata' folder of the secrlinear installation. The vignette ../doc/secrlinear-vignette.pdf shows how to import the data, which are also provided here as an secr object.

References

Efford, M. G. (1985) The structure and dynamics of water vole populations. D.Phil thesis, University of Oxford.

See Also

arvicola

Examples

plot(glymemask)
summary(glymemask)

## add a covariate, the distance downstream from the first mask point
downstrm <- networkdistance(glymemask, glymemask[1,], glymemask)[,1]
covariates(glymemask)<- data.frame(downstream = downstrm)