COMSOL Multiphysics™

posteval
Purpose
posteval
Evaluate expressions in subdomains, boundaries, edges or vertices.
Syntax
Description
[v1,v2,...,vn] = posteval(fem,e1,e2,...,en,...)
[v1,v2,...,vn] = posteval(fem,e1,e2,...,en,...) returns values
v1,v2,...,vn of the expressions e1,e2,...,en. The expressions can be evaluated
on any domain type: subdomain, boundary, edge, and vertex, using one or several
solutions.
The values vi are post data, a structure with fields p, t, q, d, and elind. The field
p contains node point coordinate information. The number of rows in p is the
number of space dimensions. The field t contains the indices to columns in p of a
simplex mesh, each column in t representing a simplex. The field q contains the
indices to columns in p of a quadrilateral mesh, each column in q representing a
quadrilateral. The field d contains data values. The columns in d correspond to node
point coordinates in columns in p. There is one row in d for each solution (see the
properties Solnum and T below). The data contains the real part of complex-valued
expressions. The field elind contains indices to mesh elements for each point.
The string expressions can be any COMSOL Multiphysics expressions involving
variables, in particular application mode variables.
The function posteval accepts the following property/values:
TABLE 1-25: VALID PROPERTY/VALUE PAIRS
PROPERTY NAME PROPERTY VALUE DEFAULT DESCRIPTION
Bpoint double matrix Local coordinates for
quadrilateral and block
elements
Const cell array Definition of constants
Cont off | on |
off
Smoothing
internal
Dl
integer vector or all domains Domain lists
cell array of integer
vectors
Edim integer full Element dimension
Frame integer spatial frame Coordinate frame
Geomnum positive integer 1 Geometry number
Phase scalar 0 Phase angle
Prpoint double matrix Local coordinates for
prism elements
333