fm_evaluator_helpers

fm_evaluator_mesh_2d

fm_evaluator_mesh_1d

Methods called internally by <code>fm_evaluator()</code> methods.

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

fm_evaluator_helpers function

<dl><dt>mesh</dt>
<dd>An <code>inla.mesh</code> or <code>inla.mesh.1d</code> object.</dd>
<dt>loc</dt>
<dd>Projection locations. Can be a matrix, <code>SpatialPoints</code>,
<code>SpatialPointsDataFrame</code>, <code>sf</code>, <code>sfc</code>, or <code>sfg</code> object.</dd>
<dt>weights</dt>
<dd>Optional weight vector, one weight for each location</dd>
<dt>derivatives</dt>
<dd>logical; If true, also return matrices <code>dA</code> and <code>d2A</code>
for <code>fm_mesh_1d</code> objects, and <code>dx</code>, <code>dy</code>, <code>dz</code> for <code>fm_mesh_2d</code>.</dd>
<dt>crs</dt>
<dd>An optional CRS or inla.CRS object associated with <code>loc</code>
and/or <code>lattice</code>.</dd>
<dt>...</dt>
<dd>Additional arguments passed on to methods.</dd>
<dt>method</dt>
<dd>character; either "default", "nearest", "linear", or
"quadratic". With <code>NULL</code> or "default", uses the object definition of the
function space. Otherwise overrides the object definition.</dd></dl>

Arguments

Internal helper functions for mesh field evaluation — fm_evaluator_helpers

<dl>

<dt>mesh</dt>
<dd>An <code>inla.mesh</code> or <code>inla.mesh.1d</code> object.</dd>


<dt>loc</dt>
<dd>Projection locations. Can be a matrix, <code>SpatialPoints</code>,
<code>SpatialPointsDataFrame</code>, <code>sf</code>, <code>sfc</code>, or <code>sfg</code> object.</dd>


<dt>weights</dt>
<dd>Optional weight vector, one weight for each location</dd>


<dt>derivatives</dt>
<dd>logical; If true, also return matrices <code>dA</code> and <code>d2A</code>
for <code>fm_mesh_1d</code> objects, and <code>dx</code>, <code>dy</code>, <code>dz</code> for <code>fm_mesh_2d</code>.</dd>


<dt>crs</dt>
<dd>An optional CRS or inla.CRS object associated with <code>loc</code>
and/or <code>lattice</code>.</dd>


<dt>...</dt>
<dd>Additional arguments passed on to methods.</dd>


<dt>method</dt>
<dd>character; either "default", "nearest", "linear", or
"quadratic". With <code>NULL</code> or "default", uses the object definition of the
function space. Otherwise overrides the object definition.</dd>

</dl>

fm_evaluator_helpers: Internal helper functions for mesh field evaluation

Description

Usage

Value

Arguments

Examples