inla.mesh.deriv: Directional derivative matrices for functions on meshes.

Description Usage Arguments Value Author(s)

View source: R/mesh.R

Description

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

Usage

1
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


inbo/INLA documentation built on Dec. 6, 2019, 9:51 a.m.