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type: software
title: 'INLAtools: Functionalities for the ''INLA'' Package'
version: 0.1.4.901
doi: 10.32614/CRAN.package.INLAtools
abstract: Contain code to work with a C struct, in short cgeneric, to define a Gaussian
  Markov random (GMRF) model. The cgeneric contain code to specify GMRF elements such
  as the graph and the precision matrix, and also the initial and prior for its parameters,
  useful for model inference. It can be accessed from a C program and is the recommended
  way to implement new GMRF models in the 'INLA' package (<https://www.r-inla.org>).
  The 'INLAtools' implement functions to evaluate each one of the model specifications
  from R. The implemented functionalities leverage the use of 'cgeneric' models and
  provide a way to debug the code as well to work with the prior for the model parameters
  and to sample from it. The `generic0` can be used to implement intrinsic models
  with the scaling as proposed in Sørbye & Rue (2014) <https://doi.org/10.1016/j.spasta.2013.06.004>,
  and the required constraints. A very useful functionality is the Kronecker product
  method that creates a new model from multiple cgeneric models. It also works with
  the rgeneric, the R version of the cgeneric intended to easy try implementation
  of new GMRF models. The Kronecker between two cgeneric models where each one needs
  a constraint, such as spatio-temporal intrinsic interaction models, the needed constraints
  are automatically set.
authors:
- family-names: Teixeira Krainski
  given-names: Elias
  email: elias.krainski@kaust.edu.sa
  orcid: https://orcid.org/0000-0002-7063-2615
- family-names: Lindgren
  given-names: Finn
  email: finn.lindgren@gmail.com
  orcid: https://orcid.org/0000-0002-5833-2011
- family-names: Rue’
  given-names: Haavard
  orcid: https://orcid.org/0000-0002-0222-1881
repository: https://eliaskrainski.r-universe.dev
repository-code: https://github.com/eliaskrainski/INLAtools
commit: 20f061b2c55a4b412236138422d1ea9863c3745b
url: https://github.com/eliaskrainski/INLAtools
date-released: '2026-06-04'
contact:
- family-names: Teixeira Krainski
  given-names: Elias
  email: elias.krainski@kaust.edu.sa
  orcid: https://orcid.org/0000-0002-7063-2615