clean_points: Clean occurrence records

In gabrielhoc/MapinguariLegacy: Tools for process-based biogeographical analysis

Description

clean_points Eliminates species occurrence records that are too close to each other or at undesired locations.

Usage

clean_points(coord, merge_dist = 2, reference_layer,
  layer_filter = NULL, dist_unit = "km")

Arguments

coord	data.frame. Data frame containing longitudes (Lon) and latitudes (Lat) of occurrence records of a species.
merge_dist	numeric. Maximum distance between points to be merged.
reference_layer	Raster* object. Any raster for the area containing the occurrence records.
layer_filter	Values for locations at reference raster which occurrence records should be eliminated.
dist_unit	character. Unit for the merging distance. Either 'km' for kilometers or 'degrees' for decimal degrees.

Value

Data frame with remaining longitudes and latitudes.

Examples

FulanusEcoRasters_present <-
  get_rasters(
    raster_source = "/Users/gabriel/Documents/Mapinguari/global_grids_10_minutes",
    ext = FulanusDistribution,
    margin = 5,
    non_fixed_var = c('prec', 'tmin', 'tmax'),
    fixed_var = 'alt',
    years = c("present"),
    reorder = TRUE)

alt <- FulanusEcoRasters_present$present$alt

clean_points(coord = FulanusDistribution,
  merge_dist = 2,
  reference_layer = alt > 500 & alt < 1000,
  layer_filter = 0)

gabrielhoc/MapinguariLegacy documentation built on May 8, 2019, 9:54 p.m.