gsw_transitions {mapme.biodiversity}

Calculate Global Surface Water (GSW) Transitions

Description

GSW transition data contains information about the type of surface water change for each pixel. The raster files have integer cell values between [0, 10] that code for different transition classes:

Usage

calc_gsw_transitions()

Details

Value	Transition Class
1	Permanent
2	New Permanent
3	Lost Permanent
4	Seasonal
5	New Seasonal
6	Lost Seasonal
7	Seasonal to Permanent
8	Permanent to Seasonal
9	Ephemeral Permanent
10	Ephemeral Seasonal

To aggregate, we sum up the area of each transition class for a given region.

The required resources for this indicator are:

• global_surface_water_transitions

Value

A function that returns a tibble with a column for name of the transition classes and corresponding area (in ha).

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", "shell_beach_protected_area_41057_B.gpkg",
  package = "mapme.biodiversity"
) %>%
  read_sf() %>%
  get_resources(get_global_surface_water_transitions()) %>%
  calc_indicators(calc_gsw_transitions()) %>%
  tidyr::unnest(gsw_transitions)

aoi

## End(Not run)