makesq: Transform site ID to a shape of a square

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

Description

The function transforms the site ID (that consits of 6 digits) to the SpatialPolygons of squares (with a given sidelength) in Swiss grid 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 with site coordinates
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

Shapefile (as SpatialPolygons of package sp) of the sampling squares.

Examples

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

TobiasRoth/BDM documentation built on May 30, 2018, 8:02 a.m.