as.geojson: Methods to coerce geographical coordinates into a geojson...

In ropensci/chirps: API Client for CHIRPS and CHIRTS

Methods to coerce geographical coordinates into a geojson polygon

Description

Take single points from geographical coordinates and coerce into a geojson of geometry 'Polygon'

Usage

as.geojson(lonlat, dist = 1e-05, nQuadSegs = 2L, ...)

## Default S3 method:
as.geojson(lonlat, dist = 1e-05, nQuadSegs = 2L, ...)

## S3 method for class 'sf'
as.geojson(lonlat, dist = 1e-05, nQuadSegs = 2L, ...)

Arguments

lonlat	a data.frame or matrix with geographical coordinates 'lonlat', in that order, or an object of class sf with geometry type 'POINT' or 'POLYGON'
dist	numeric, buffer distance for all lonlat
nQuadSegs	integer, number of segments per quadrant
...	further arguments passed to sf methods

Value

An object of class 'geosjon' for each row in lonlat

Examples

# Default S3 Method
# random geographic points within bbox(10, 12, 45, 47)
library("sf")

set.seed(123)
lonlat <- data.frame(lon = runif(1, 10, 12),
                     lat = runif(1, 45, 47))

gjson <- as.geojson(lonlat)

#################

# S3 Method for objects of class 'sf'
# random geographic points within bbox(10, 12, 45, 47)
library("sf")

set.seed(123)
lonlat <- data.frame(lon = runif(5, 10, 12),
                     lat = runif(5, 45, 47))

lonlat <- st_as_sf(lonlat, coords = c("lon","lat"))

gjson <- as.geojson(lonlat)

ropensci/chirps documentation built on Jan. 21, 2025, 12:57 p.m.