A lawn user asked the other day about a workflow with lawn going from hex grid to calculate a centroid for each, then buffer each centroid to circles.
You’ll want to install the dev version as there’s a fix to lawn_circle we’ll need
devtools::install_github("ropensci/lawn")
Load the library
library(lawn)
Define an area
bbox <- c(-118.521, 33.715, -118.145, 34.179)
Make a hex grid
hex_grid <- lawn_hex_grid(extent = bbox, cellWidth = 10, units = 'miles')
Visualize
hex_grid %>% view()
Convert each hexagon in the hex grid to a GeoJSON feature
then calculate centroid on that hexagaon
centroids <- as_feature(hex_grid) %>% purrr::map(lawn_centroid)
Buffer each point a radius of 5 miles each
res <- centroids %>% purrr::map(lawn_circle, radius = 5)
Visualize
res %>% view
comes from bind the new 'turf.circle' feature · Issue #50 · ropensci-archive/lawn · GitHub