inlamesh3d

The goal of inlamesh3d is to add 3D mesh functionality to fmesher and INLA. When the methods have been tested, they will be incorporated into the main packages instead.

For online documentation, see https://inlabru-org.github.io/inlamesh3d/

Installation

You can install the development version from GitHub with:

# install.packages("remotes")
remotes::install_github("inlabru-org/inlamesh3d", build_vignettes = TRUE)

Example

You must load INLA before loading inlamesh3d to get the correct overrides.

suppressPackageStartupMessages(library(INLA))
library(inlamesh3d)
#> Loading required package: fmesher
#> 
#> Attaching package: 'inlamesh3d'
#> The following objects are masked from 'package:INLA':
#> 
#>     inla.spde2.matern, inla.spde2.pcmatern
loc <- matrix(rnorm(12), 4, 3)
tv <- geometry::delaunayn(loc)
mesh <- inla.mesh3d(loc, tv)
str(mesh)
#> List of 4
#>  $ manifold: chr "R3"
#>  $ n       : int 4
#>  $ loc     : num [1:4, 1:3] -0.7103 -0.7264 -1.0812 1.5949 -0.0406 ...
#>  $ graph   :List of 1
#>   ..$ tv: int [1, 1:4] 1 2 4 3
#>  - attr(*, "class")= chr [1:2] "inla_mesh_3d" "inla.mesh"

New version of inla.spde2.matern, as well as fm_basis(), fm_evaluator(), and fm_fem() methods are now available to use in much the same way as for 2D meshes.

For a full example, see vignette("spde3d").