Summarize receiver density and counts

This function provides summary statistics on the densities and counts of receivers in a grid.

Usage

den_rcvs(df)

Arguments

df

A simple feature polygon object (a grid)

Value

A data frame object with minimum, mean, and maximum of receiver densities and counts in km^-2

Examples

# Apply den_rcvs to list of grid resolutions

library(sporeg)
library(dplyr)
#> 
#> Attaching package: ‘dplyr’
#> The following objects are masked from ‘package:stats’:
#> 
#>     filter, lag
#> The following objects are masked from ‘package:base’:
#> 
#>     intersect, setdiff, setequal, union
library(sf)
#> Linking to GEOS 3.12.1, GDAL 3.8.4, PROJ 9.4.0; sf_use_s2() is TRUE
library(data.table)
#> 
#> Attaching package: ‘data.table’
#> The following objects are masked from ‘package:dplyr’:
#> 
#>     between, first, last
load(system.file("extdata", "res.Rda", package = "sporeg"))

rcv_dens <- lapply(res, den_rcvs)

rcv_dens <- data.table::rbindlist(rcv_dens, idcol = 'resolution') %>%
left_join(tibble(resolution = 1:4,
res_name = c("100km", "50km", "25km", "10km")),
by = "resolution") %>%
mutate(res_name = ordered(res_name, levels = c("100km", "50km", "25km", "10km")))