meshCountry {GeoAdjust}

Creates a constrained refined Delaunay triangulation mesh based on the country borders.

Description

Creates a constrained refined Delaunay triangulation mesh based on the country borders.

Usage

meshCountry(
  admin0 = NULL,
  max.edge = NULL,
  cutoff = NULL,
  offset = NULL,
  target_crs = NULL
)

Arguments

admin0

An sf class multipolygon representing the country borders.

max.edge

A vector of two values. The first and the second elements of the vector represent the largest allowed triangle lengths for the inner and outer mesh, respectively.

cutoff

The minimum allowed distance of the vertices to each other.

offset

A value representing the extension distance for the mesh.

target_crs

A projection string representing the desired coordinate reference system according to which the mesh will be constructed. The measurement unit of the target_crs should be in kilometers.

Value

A constrained refined Delaunay triangulation mesh created based on the country borders.

Examples

path1 <- system.file("extdata", "geoData.rda", package = "GeoAdjust")
load(path1)
crs_KM = "+units=km +proj=utm +zone=37 +ellps=clrk80
+towgs84=-160,-6,-302,0,0,0,0 +no_defs"
mesh.s <- meshCountry(admin0= adm0, max.edge = c(25, 50), offset = -.08,
cutoff=4, target_crs = crs_KM)