Select rasters for specific region with intelligent filtering

Intelligently select raster files that overlap with a specified region. For ASTER files (GDEM and WBD), uses filename-based coordinate extraction for fast filtering without loading full rasters.

Usage

select_rasters_for_region(
  input_folder,
  region_boundary,
  overlap = TRUE,
  buffer_size = 0.1
)

Arguments

input_folder

Directory containing raster files

region_boundary

Region boundary or bounding box

overlap

Logical. If TRUE (default), checks for actual overlap with region. If FALSE, only includes tiles whose centroid falls within region. Only applies to ASTER files; non-ASTER files always use overlap detection.

buffer_size

Buffer around region (in degrees)

Value

Character vector of relevant file paths

Examples

# \donttest{
# Select ASTER files for Michigan using overlap detection
michigan_files <- select_rasters_for_region("/aster/files", "Michigan")
#> Selecting rasters for specified region...
#> Selected 0 files out of 0 for the specified region

# Use centroid-based selection (faster, fewer tiles)
michigan_files_centroid <- select_rasters_for_region("/aster/files", "Michigan", 
                                                      overlap = FALSE)
#> Selecting rasters for specified region...
#> Selected 0 files out of 0 for the specified region

# Select with custom buffer
nevada_files <- select_rasters_for_region("/data", "Nevada", buffer_size = 0.2)
#> Selecting rasters for specified region...
#> Selected 0 files out of 0 for the specified region
# }