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Adaptively Refine a Mesh Based on Error Indicators

Source: R/refine.R
refine_mesh.Rd

Refines triangles where error indicators exceed a threshold by inserting their centroids as new vertices and re-triangulating. Designed for iterative solve-refine-re-solve workflows where error indicators come from an SPDE solver (e.g., tulpa's posterior variance).

Usage

refine_mesh(
  mesh,
  indicators,
  threshold = NULL,
  fraction = NULL,
  max_iter = 1L,
  min_area = 0
)

Arguments

mesh

A tulpa_mesh object (2D only).

indicators

Numeric vector of per-triangle error indicators (length n_triangles). Higher values trigger refinement.

threshold

Triangles with indicator above this value are refined. Default: median(indicators) (refine worst half).

fraction

Alternative to threshold: refine this fraction of triangles with the highest indicators. Default NULL (use threshold).

max_iter

Maximum number of refine-retriangulate iterations. Default 1 (single refinement pass).

min_area

Minimum triangle area below which triangles are never refined, regardless of indicator. Default 0 (no limit).

Value

A new tulpa_mesh object with refined triangulation.