pointList2poly: Convert a list of points into spatial polygons object

In lidaRtRee: Forest Analysis with Airborne Laser Scanning (LiDAR) Data

Convert a list of points into spatial polygons object

Description

Converts a list of points specifying polygons into a spatial object

Usage

pointList2poly(points_list, df = NULL, ...)

Arguments

points_list	list of data frames of xy coordinates. In each data.frame the last row must be the same as the first row
df	data.frame. Optional data.frame to be associated to polygons
...	arguments to be passed to st_sfc

Value

a simple feature collection with POLYGON geometry.

See Also

ellipses4Crown

Examples

# Compute coordinates of polygons
ellipses <- ellipses4Crown(c(0, 10), c(0, 10), c(2, 2), c(3, 4), c(2.5, 3), c(2, 3),
  id = c("A", "B")
)
# Convert to sf object
ellipses1 <- pointList2poly(ellipses)
ellipses1
# Convert to sf object with user-defined data.frame
ellipses2 <- pointList2poly(ellipses, df = data.frame(info = 1:2))

# draw ellipses
plot(ellipses2, col = ellipses2$info)

lidaRtRee documentation built on April 3, 2025, 10:29 p.m.