fm_fem

fm_fem.fm_mesh_1d

fm_fem.fm_mesh_2d

fm_fem.inla.mesh.1d

fm_fem.inla.mesh

fm_fem.fm_tensor

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

fm_fem function

<dl><dt>mesh</dt>
<dd><code>fm_mesh_1d</code> or other supported mesh class object</dd>
<dt>order</dt>
<dd>integer</dd>
<dt>...</dt>
<dd>Currently unused</dd>
<dt>aniso</dt>
<dd>If non-NULL, a <code>list(gamma, v)</code>. Calculates anisotropic structure
matrices (in addition to the regular) for \(\gamma\) and \(v\) for
an anisotropic operator \(\nabla\cdot H \nabla\), where
\(H=\gamma I + v v^\top\).
Currently (2023-08-05) the fields need to be given per vertex.</dd></dl>

Arguments

Compute finite element matrices — fm_fem

<dl>

<dt>mesh</dt>
<dd><code>fm_mesh_1d</code> or other supported mesh class object</dd>


<dt>order</dt>
<dd>integer</dd>


<dt>...</dt>
<dd>Currently unused</dd>


<dt>aniso</dt>
<dd>If non-NULL, a <code>list(gamma, v)</code>. Calculates anisotropic structure
matrices (in addition to the regular) for \(\gamma\) and \(v\) for
an anisotropic operator \(\nabla\cdot H \nabla\), where
\(H=\gamma I + v v^\top\).
Currently (2023-08-05) the fields need to be given per vertex.</dd>

</dl>

Compute finite element matrices

fm_fem: Compute finite element matrices

Description

Usage

Value

Arguments

Examples