generate_pa_target_group {glossa} | R Documentation |
Generate Pseudo-Absences Using Target-Group Background
Description
Generate Pseudo-Absences Using Target-Group Background
Usage
generate_pa_target_group(
presences,
target_group_points,
study_area,
raster_stack,
predictor_variables,
coords = c("decimalLongitude", "decimalLatitude"),
ratio = 1,
attempts = 100,
seed = NULL
)
Arguments
presences |
Data frame containing presence points. |
target_group_points |
Data frame of all sampling locations (target group). |
study_area |
Spatial polygon defining the study area ('sf' object). |
raster_stack |
'SpatRaster' object containing covariate data. |
predictor_variables |
Character vector of the predictor variables selected for this species. |
coords |
Character vector specifying the column names for latitude and longitude. Defaults to 'c("decimalLongitude", "decimalLatitude")'. |
ratio |
Ratio of pseudo-absences to presences (default 1 = balanced). |
attempts |
Integer specifying the number of attempts to generate exact pseudo-absences. Defaults to 100. |
seed |
Optional random seed. |
Value
Data frame containing pseudo-absence points with coordinates, timestamp, pa = 0, and covariates.
[Package glossa version 1.2.2 Index]