Clip Spatial Features to an AOI Polygon

Clips an sf data frame to an area of interest polygon using sf::st_intersection(). Handles geometry type cleanup automatically — mixed geometry collections from intersection are filtered to the original geometry type (e.g. polygon, linestring).

Usage

frs_clip(x, aoi)

Arguments

x

An sf data frame to clip.

aoi

An sf or sfc polygon to clip to.

Value

An sf data frame clipped to aoi, with geometry type matching the input. Returns an empty sf with the same columns if no features intersect.

Details

Typical use: clip network query results (lakes, wetlands, streams) to a watershed polygon from frs_watershed_at_measure().

Examples

if (FALSE) { # \dontrun{
# Clip wetlands to a subbasin watershed
aoi <- frs_watershed_at_measure(blk, drm, upstream_measure = urm)
wetlands <- frs_network(blk, drm, tables = list(
  wetlands = "whse_basemapping.fwa_wetlands_poly"
))
wetlands_clipped <- frs_clip(wetlands, aoi)
} # }