makesq: Transform site ID to a shape of a square

In TobiasRoth/BDM: Collection of functions to analyze biodiversity data from Switzerland

Transform site ID to a shape of a square

Description

The function transforms the site ID (that consits of 6 digits and points to the SW corner of the square) to a tibble with class sf and a polygon as a geometry. The polygon is a square with a given sidelength in meter. The projection is eiter a the Swiss projection (old or new) or WGS projection. The latter can be used to plot the points on a leaflet (see examples).

Usage

makesq(coordID, projection = "CH-old", sidelength = 1000)

Arguments

coordID	Vector or tibble with site site-IDs. If a tibble, the column with the site-IDs should be named as "aID_STAO".
projection	What projection should be used for the coordinates. One of CH-old: Old Swiss-grid CH-new: New Swiss-grid WGS: WGS grid (e.g. to be used for leaflets, see example)
sidelength	The sidelength (in m) of the squares.

Value

Tibble of class sf with a geometry that describes the sampling squares.

Examples

require(leaflet)
tmp <- makesq(coordID = c(645260), projection = "WGS")
leaflet() %>%
  addTiles() %>%
  addPolygons(data = tmp)

TobiasRoth/BDM documentation built on June 12, 2024, 7:16 a.m.