inla.mesh.lattice: Lattice grids for inla.mesh

In andrewzm/INLA: Functions which allow to perform full Bayesian analysis of latent Gaussian models using Integrated Nested Laplace Approximaxion

Description

Construct a lattice grid for inla.mesh

Usage

inla.mesh.lattice(x = seq(0, 1, length.out=2),
          y = seq(0, 1, length.out=2),
          z = NULL,
          dims = if (is.matrix(x)) {
                   dim(x)
                 } else {
                   c(length(x), length(y))
                 },
          units = NULL)

Arguments

x
y
z
dims
units	One of c("default", "longlat", "longsinlat").

Value

An inla.mesh.lattice object.

Author(s)

Finn Lindgren [e-mail]

See Also

inla.mesh

Examples

lattice = inla.mesh.lattice(seq(0, 1, length.out=17), seq(0, 1, length.out=10))

## Use the lattice "as-is", without refinement:
mesh = inla.mesh.create(lattice=lattice, boundary=lattice$segm)
mesh = inla.mesh.create(lattice=lattice, extend=FALSE)
plot(mesh)

## Refine the triangulation, with limits on triangle angles and edges:
mesh = inla.mesh.create(lattice=lattice,
                        refine=list(max.edge=0.08),
                        extend=FALSE)
plot(mesh)

## Add an extension around the lattice, but maintain the lattice edges:
mesh = inla.mesh.create(lattice=lattice,
                        refine=list(max.edge=0.08),
                        interior=lattice$segm)
plot(mesh)

## Only add extension:
mesh = inla.mesh.create(lattice=lattice, refine=list(max.edge=0.08))
plot(mesh)

andrewzm/INLA documentation built on May 10, 2019, 11:12 a.m.