Assembling Stiff Matrix by $P_1$ -Lagrange finite elements using "base" version (see report). More...

Functions
function R =	StiffAssemblingP1base (nq, nme, q, me, areas)
	Assembling Stiff Matrix by -Lagrange finite elements using "base" version (see report).

Detailed Description

Assembling Stiff Matrix by $P_1$ -Lagrange finite elements using "base" version (see report).

Function Documentation

function R = StiffAssemblingP1base	(	nq,
		nme,
		q,
		me,
		areas
	)

Assembling Stiff Matrix by $P_1$ -Lagrange finite elements using "base" version (see report).

The Stiff Matrix is given by

$\Stiff_{i,j}=\int_\DOMH \DOT{\GRAD\FoncBase_i(\q)}{\GRAD\FoncBase_j(\q)}d\q,\ \forall (i,j)\in\ENS{1}{\nq}^2$

where $\FoncBase_i$ are $P_1$ -Lagrange basis functions.

Example

    Th=SquareMesh(10);
    R=StiffAssemblingP1base(Th.nq,Th.nme,Th.me,Th.q,Th.areas);

New in 1.1:: (Francois Cuvelier, 2012-11-22) Added doxygen documentation using mtoc++ tool

Redistribution and use in source and binary forms, with or without modification, are permitted only in compliance with the BSD license, see http://www.opensource.org/licenses/bsd-license.php

Parameters

nq	total number of nodes of the mesh, also noted $\nq$ .
nme	number of triangles, also noted $\nme$ .
q	$2\times\nq$ array, ${\q}(\il,j)$ is the $\il$ -th coordinate of the -th vertex, $\il\in\{1,2\}$ and $j\in\{1,\hdots,n_q\}.$ Also noted $\q$ .
me	$3\times\nme$ `int32` array, $\me(\jl,k)$ index of storage, in the array $\q$ , of the $\jl$ -th vertex of the triangle of index , $\jl\in\{1,2,3\}$ and $k\in\{1,\hdots,\nme\}.$ Also noted $\me$ .
areas	$1\times\nme$ array, areas(k) is the area of triangle k.

Return values

R	$\nq\times\nq$ sparse matrix

Definition at line 17 of file StiffAssemblingP1base.m.