fm_mesh_2d: Make a 2D mesh object

In fmesher: Triangle Meshes and Related Geometry Tools

Make a 2D mesh object

Description

Make a 2D mesh object

Usage

fm_mesh_2d(...)

fm_mesh_2d_inla(
  loc = NULL,
  loc.domain = NULL,
  offset = NULL,
  n = NULL,
  boundary = NULL,
  interior = NULL,
  max.edge = NULL,
  min.angle = NULL,
  cutoff = 1e-12,
  max.n.strict = NULL,
  max.n = NULL,
  plot.delay = NULL,
  crs = NULL,
  ...
)

Arguments

...	Currently passed on to fm_mesh_2d_inla
loc	Matrix of point locations to be used as initial triangulation nodes. Can alternatively be a sf, sfc, SpatialPoints or SpatialPointsDataFrame object.
loc.domain	Matrix of point locations used to determine the domain extent. Can alternatively be a SpatialPoints or SpatialPointsDataFrame object.
offset	The automatic extension distance. One or two values, for an inner and an optional outer extension. If negative, interpreted as a factor relative to the approximate data diameter (default=-0.10???)
n	The number of initial nodes in the automatic extensions (default=16)
boundary	one or more (as list) of fm_segm() objects, or objects supported by fm_as_segm()
interior	one object supported by fm_as_segm()
max.edge	The largest allowed triangle edge length. One or two values.
min.angle	The smallest allowed triangle angle. One or two values. (Default=21)
cutoff	The minimum allowed distance between points. Point at most as far apart as this are replaced by a single vertex prior to the mesh refinement step.
max.n.strict	The maximum number of vertices allowed, overriding min.angle and max.edge (default=-1, meaning no limit). One or two values, where the second value gives the number of additional vertices allowed for the extension.
max.n	The maximum number of vertices allowed, overriding max.edge only (default=-1, meaning no limit). One or two values, where the second value gives the number of additional vertices allowed for the extension.
plot.delay	If logical TRUE or a negative numeric value, activates displaying the result after each step of the multi-step domain extension algorithm.
crs	An optional fm_crs(), sf::crs or sp::CRS object

Value

An inla.mesh object.

Functions

• fm_mesh_2d_inla(): Legacy method for INLA::inla.mesh.2d() Create a triangle mesh based on initial point locations, specified or automatic boundaries, and mesh quality parameters.

INLA compatibility

For mesh and curve creation, the fm_rcdt_2d_inla(), fm_mesh_2d_inla(), and fm_nonconvex_hull_inla() methods will keep the interface syntax used by INLA::inla.mesh.create(), INLA::inla.mesh.2d(), and INLA::inla.nonconvex.hull() functions, respectively, whereas the fm_rcdt_2d(), fm_mesh_2d(), and fm_nonconvex_hull() interfaces may be different, and potentially change in the future.

Author(s)

Finn Lindgren [e-mail]

See Also

fm_rcdt_2d(), fm_mesh_2d(), fm_delaunay_2d(), fm_nonconvex_hull(), fm_extensions(), fm_refine()

Other object creation and conversion: fm_as_fm(), fm_as_lattice_2d(), fm_as_mesh_1d(), fm_as_mesh_2d(), fm_as_segm(), fm_as_sfc(), fm_as_tensor(), fm_lattice_2d(), fm_mesh_1d(), fm_segm(), fm_simplify(), fm_tensor()

Examples

fm_mesh_2d_inla(boundary = fm_extensions(cbind(2, 1), convex = 1, 2))

fmesher documentation built on July 1, 2024, 5:07 p.m.