slope function

Calculate slope statistics

This function allows to calculate slope statistics for polygons. For each polygon, the desired statistic(s) are returned.

calc_slope(engine = "exactextract", stats = "mean")

Arguments

• engine: The preferred processing function from either one of "zonal", "extract" or "exactextract" as a character string.
• stats: Function to be applied to compute statistics for polygons. Accepts either a single string or a vector of strings, such as "mean", "median", "sd", "min", "max", "sum", or "var".

Returns

A function that returns an indicator tibble with specified slope statistics as variables and corresponding values (in degrees).

Details

The required resource for this indicator is:

• nasa_srtm

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_nasa_srtm()) %>%
  calc_indicators(
    calc_slope(stats = c("mean", "median", "sd", "var"), engine = "extract")
  ) %>%
  portfolio_long()

aoi
## End(Not run)