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Fetch FWA Wetlands

Source: R/frs_wetland_fetch.R
frs_wetland_fetch.Rd

Retrieve wetland polygons from an FWA wetlands table. Filter by watershed group code, blue line key, and/or bounding box.

Usage

frs_wetland_fetch(
  conn,
  watershed_group_code = NULL,
  blue_line_key = NULL,
  bbox = NULL,
  area_ha_min = NULL,
  table = "whse_basemapping.fwa_wetlands_poly",
  cols = c("waterbody_poly_id", "waterbody_key", "waterbody_type", "area_ha",
    "gnis_name_1", "blue_line_key", "watershed_group_code", "geom"),
  limit = NULL
)

Arguments

conn

A DBI::DBIConnection object (from frs_db_conn()).

watershed_group_code

Character. Watershed group code (e.g. "BULK"). Default NULL.

blue_line_key

Integer. Blue line key for wetlands on a specific stream. Default NULL.

bbox

Numeric vector of length 4 (xmin, ymin, xmax, ymax) in BC Albers (EPSG:3005). Default NULL.

area_ha_min

Numeric. Minimum wetland area in hectares. Default NULL.

table

Character. Fully qualified table name. Default "whse_basemapping.fwa_wetlands_poly".

cols

Character vector of column names to select. Default includes the most commonly used FWA wetland attributes.

limit

Integer. Maximum rows to return. Default NULL (no limit).

Value

An sf data frame of wetland polygons.

See also

Other fetch: frs_lake_fetch(), frs_stream_fetch()

Examples

if (FALSE) { # \dontrun{
conn <- frs_db_conn()
wetlands <- frs_wetland_fetch(conn, watershed_group_code = "BULK")
wetlands_big <- frs_wetland_fetch(conn, watershed_group_code = "BULK",
  area_ha_min = 5)
DBI::dbDisconnect(conn)
} # }