Creates a data.frame of species' references that contains identifiers of position and species name, using a SpatVector representing multiple species as input.
Arguments
- spdf_object
SpatVector representing species' geographic distributions. The data.frame associated with the object must contain a column named "Species" to distinguish among features.
- spdf_grid
SpatVector of geographic grid for the region of interest (output of function
grid_from_region).- parallel
(logical) whether to perform analyses in parallel. Default = FALSE.
- n_cores
(numeric) number of cores to be used when
parallel= TRUE. The default, NULL, uses available cores - 1.
Value
A data.frame of species' found in distinct positions (defined with identifiers); includes two columns: "ID" and "Species".
Examples
# Data
species_data <- terra::vect(system.file("extdata/species_data.gpkg",
package = "biosurvey"))
mx <- terra::vect(system.file("extdata/mx.gpkg", package = "biosurvey"))
# GRID
grid_reg <- grid_from_region(region = mx, cell_size = 100)
# Species data from polygons
sp_data <- spdf_2data(spdf_object = species_data, spdf_grid = grid_reg)
#>
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summary(sp_data)
#> ID Species
#> Min. : 39.0 Length:695
#> 1st Qu.:221.0 Class :character
#> Median :364.0 Mode :character
#> Mean :352.4
#> 3rd Qu.:509.0
#> Max. :658.0