mcp {changeRangeR}

Minimum Convex Hull Polygon

Description

Generates a minimum convex polygon (MCP; i.e., convex hull) that is delineated from occurrence locality coordinates. This function is a wrapper for 'chull()' that makes a SpatialPolygons object.

Usage

mcp(xy, crs = NULL)

Arguments

xy

Matrix or Data frame of occurrence coordinates

crs

Character of coordinate reference system for minimum convex hull

Value

a SpatialPolygons object of the minimum convex hull around occurrences.

Examples

# generate occurrences
ras1 <- raster::raster(nrows=108, ncols=108, xmn=-50, xmx=50)
raster::values(ras1)<- runif(n = (108*108))
occs <- dismo::randomPoints(ras1, 4)
# create mcp
mcp(occs)