h

man/hull.Rd

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+\name{convHull}
+
+\docType{methods}
+
+\alias{convHull}
+\alias{convHull,SpatVector-method}
+\alias{minRect}
+\alias{minRect,SpatVector-method}
+\alias{minCircle}
+\alias{minCircle,SpatVector-method}
+
+\title{ 
+Convex hull, minimal bounding rotated rectangle, and minimal bounding circle
+}
+
+\description{
+Get the convex hull, the minimal bounding rotated rectangle, or minimal bounding circle of a SpatVector
+}
+
+\usage{
+\S4method{convHull}{SpatVector}(x, by="")
+
+\S4method{minRect}{SpatVector}(x, by="")
+
+\S4method{minCircle}{SpatVector}(x, by="")
+}
+
+\arguments{
+  \item{x}{SpatVector}
+  \item{by}{character (variable name), to get a new geometry for groups of input geometries}
+}
+
+\value{
+SpatVector
+}
+
+\examples{
+p <- vect(system.file("ex/lux.shp", package="terra"))
+h <- convHull(p)
+
+hh <- convHull(p, "NAME_1")
+
+geos_v <- as.numeric(strsplit(gdal(lib="geos"), "\\.")[[1]])
+if (v[1] >= 3 && v[2] >= 6) {
+	rr <- minRect(p, "NAME_1")
+	plot(rr, lwd=5, border="gray")
+	plot(hh, "NAME_1", col=rainbow(10, alpha=.5), lwd=3, add=TRUE, plg=list(x="topright"))
+	lines(aggregate(p, "NAME_1"), col="blue", lty=2, lwd=2)
+}
+}
+
+\keyword{methods}
+\keyword{spatial}
+