traveltime_2000 {mapme.biodiversity} | R Documentation |
Calculate accessibility statistics for the year 2000
Description
Accessibility refers to the ease with which cities can be reached from a certain location. This function allows efficient calculation of accessibility statistics (i.e., travel time to the nearest city) for polygons. For each polygon, the desired statistic/s (mean, median or sd) is/are returned.
Usage
calc_traveltime_2000(engine = "extract", stats = "mean")
Arguments
engine |
The preferred processing functions from either one of "zonal", "extract" or "exactextract" as character. |
stats |
Function to be applied to compute statistics for polygons either single or multiple inputs as character. Supported statistics are: "mean", "median", "sd", "min", "max", "sum", "var". |
Details
The required resource for this indicator is:
Value
A function that returns an indicator tibble with accessibility statistics for the year 2000 as variables and corresponding values (in minutes) as values.
Examples
## Not run:
library(sf)
library(mapme.biodiversity)
outdir <- file.path(tempdir(), "mapme-data")
dir.create(outdir, showWarnings = FALSE)
mapme_options(
outdir = outdir,
verbose = FALSE
)
aoi <- system.file("extdata", "sierra_de_neiba_478140_2.gpkg",
package = "mapme.biodiversity"
) %>%
read_sf() %>%
get_resources(get_accessibility_2000()) %>%
calc_indicators(
calc_traveltime_2000(stats = c("mean", "median", "sd"), engine = "extract")
) %>%
portfolio_long()
aoi
## End(Not run)