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Download original assets

In CRAN or offline builds, network-dependent chunks are not evaluated.

This example uses BlueTopo tiles covering New York Harbor. The workflow demonstrates tile discovery, checksum-verified asset retrieval, and file-backed raster access with terra. Raster Attribute Table (RAT) sidecars are retained with the source GeoTIFF assets.

Example area

First download

manifest <- bluertopo_download(
  real_aoi,
  path = real$download_dir,
  resolution = "native",
  coverage = "fill",
  rat = TRUE,
  verify = "sha256",
  on_exists = "verify",
  progress = FALSE,
  quiet = TRUE
)

Reuse existing verified files

Manifest files

Source domain summary

Download status counts

The second call reports reused_verified for files that already exist and still match NOAA SHA-256 checksums. RAT sidecars are downloaded and verified with the GeoTIFF assets.

These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.