inla.mesh.deriv {INLA}R Documentation

Directional derivative matrices for functions on meshes.

Description

[Deprecated] since ⁠23.08.18⁠. Use fmesher::fm_basis() instead.

Calculates directional derivative matrices for functions on inla.mesh() objects.

Usage

inla.mesh.deriv(mesh, loc)

Arguments

mesh

An inla.mesh() object.

loc

Coordinates where the derivatives should be evaluated.

Value

A

The projection matrix, ⁠u(loc_i)=sum_j A_ij w_i⁠

dx, dy, dz

Derivative weight matrices, ⁠du/dx(loc_i)=sum_j dx_ij w_i⁠, etc.

Author(s)

Finn Lindgren finn.lindgren@gmail.com

[Package INLA version 25.10.19 Index]