bufferforsiland: Percentage of landscape variable in buffers.

In siland: Spatial Influence of Landscape

Percentage of landscape variable in buffers.

Description

Function computing the percentages of landscape variables in buffers of given sizes (i.e. radii).

Usage

bufferforsiland(d, sfGIS, loc.sf, landnames, border = F)

Arguments

d	a vector of the distances of the buffer sizes. The length of d has to be equal to that of landnames.
sfGIS	an object of class sf containing the landscape variables (land uses). Landscape variables are equal to 1 (presence) or 0 (absence).
loc.sf	an object of class sf or a dataframe containing locations of buffers centers. For dataframe, locations have to be given in columns "X" and "Y".
landnames	a vector of characters of the names of the landscape variables
border	a logical (FALSE by default). If border=FALSE buffers are computed from the locations points given in loc.sf If border=TRUE buffers are computed from the border of the polygon that contain the points in loc.sf.

Value

a dataframe containing the percentages of the landscape variables named landnames (in columns) in buffers of sizes described in d and centered on locations described in loc.sf (in rows).

Author(s)

Martin O.

Examples

data(dataSiland)
data(landSiland)
dataSiland[1:10,c("X","Y")]
landSiland$L1
landSiland$L2

res=bufferforsiland(c(100,200),sfGIS=landSiland, loc.sf=dataSiland, landnames=c("L1","L2"))
res

siland documentation built on March 31, 2023, 7:33 p.m.