# Example gallery

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.

## What the examples show

Example | Main function | Shows | Output type
--- | --- | --- | ---
Discover tiles and coverage | bluertopo_tiles() | AOI intersection, selected footprints, coverage diagnostics | Tables and footprint figure
Download original assets | bluertopo_download() | Verified NOAA GeoTIFF and RAT sidecar assets | Manifest tables and status figure
Extract elevation with terra | bluertopo() | File-backed terra object and provenance | terra summary tables and raster figure
Compare resolution policies | bluertopo_tiles() | Native source-resolution selection effects | Policy comparison tables and maps
Mixed grids and output grid | bluertopo() | SpatRasterCollection versus explicit output grid | Grid summary tables and raster figure
Layers and RAT metadata | bluertopo() | Elevation, uncertainty, contributor IDs, and RAT metadata | Layer/RAT tables and raster figures

## Example area

## Locator map

## Download plan

## Terra preview

`resolution` selects native source tiles. `output_resolution` is used only when the user explicitly requests an output grid.