assignPolys: Assign spatial polygons to sites
In utah-dwq/udwqTools: A Collection of R Tools for Utah Division of Water Quality

assignPolys

R Documentation

Assign spatial polygons to sites

Description

This function assigns spatial polygon data to water quality portal type site objects (or data with site information attached).

Usage

assignPolys(
  data,
  polygon,
  lat = "LatitudeMeasure",
  long = "LongitudeMeasure",
  columns
)

Arguments

`data`	Input dataset. Must include latitude & longitude columns.
`polygon`	Polygon to assign information to sites. Must be an sf type polygon shapefile, WGS84 projection recommended.
`lat`	Name of latitude column. Default matches WQP objects.
`long`	Name of longitude column. Default matches WQP objects.
`columns`	Vector of columns to retain from polygon object. If columns not specified, function will retain all columns.

Value

Returns the input data frame with assessment unit information appended.

Examples

# Read a couple of sites (Mantua Reservoir and a tributary)
sites=readWQP(type="sites", siteid=c("UTAHDWQ_WQX-4900440","UTAHDWQ_WQX-4900470"))
sites_AUs=assignPolys(sites, wqTools::au_poly)
sites_BUs=assignPolys(sites, wqTools::bu_poly)

utah-dwq/udwqTools documentation built on July 17, 2024, 10:21 p.m.