fmesher_qinv

Requires RcppEigen which is not compiled in by default. Enable with
<code>PKG_CPPFLAGS=-DFMESHER_WITH_EIGEN</code> in <code>src/Makevars</code> and add <code>RcppEigen</code>
to the <code>DESCRIPTION</code> <code>LinkingTo</code> field.

internal

Generate planar and spherical triangle meshes,
compute finite element calculations for 1- and 2-dimensional flat and curved
manifolds with associated basis function spaces, methods for lines and
polygons, and transparent handling of coordinate reference systems and
coordinate transformation, including 'sf' and 'sp' geometries. The core
'fmesher' library code was originally part of the 'INLA' package, and
implements parts of "Triangulations and Applications" by
Hjelle and Daehlen (2006) <doi:10.1007/3-540-33261-8>.

Finn Lindgren

fmesher

Triangle Meshes and Related Geometry Tools

Seaton Andy

Suen Man Ho

Fabian E. Bachl

fmesher_qinv function

<dl><dt>AA</dt>
<dd>A sparse matrix</dd></dl>

Arguments

Compute sparse matrix inverse — fmesher_qinv

<dl>

<dt>AA</dt>
<dd>A sparse matrix</dd>

</dl>

fmesher_qinv: Compute sparse matrix inverse

Description

Usage

Arguments