COMSOL Multiphysics™

geominfo
Purpose
geominfo
Retrieve geometry information.
Syntax [xx,...] = geominfo(geom,'Out', {'xx' ...},...)
Description
[xx,...] = geominfo(geom,'Out', {'xx',...},...) retrieves geometry
information specified in property Out from the analyzed geometry geom.
geom is an analyzed geometry, which is a geometry object, a mesh object or a
Geometry M-file. The two latter formats are not supported in 3D. The
Decomposed Geometry matrix of the PDE Toolbox is supported as well, but this
alternative may be eliminated in future releases. For details on analyzed geometries,
see the chapter “Geometry Modeling and CAD Tools” on page 21 in the COMSOL
Multiphysics User’s Guide or the Command Reference entries geomcsg,
geomfile, and meshinit.
In the following description, a geometric entity refers to a vertex, an edge segment,
a face segment or a subdomain.
• If geom is a 1D analyzed geometry, the geometric entities are vertices and 1D
subdomains that are bounded by vertices.
• If geom is a 2D analyzed geometry, the geometric entities are vertices, 1D edge
segments bounded by vertices, that are assumed to be smooth in the interior, that
is, sufficiently differentiable, and 2D subdomains bounded by edge segments.
• If geom is a 3D analyzed geometry, the geometric entities are vertices, 1D edge
segments bounded by vertices, 2D smooth face segments bounded by edges, and
3D subdomains bounded by face segments.
The function geominfo accepts the following property/values:
TABLE 1-65: VALID PROPERTY/VALUE PAIRS.
PROPERTY 1D 2D 3D DESCRIPTION
Od ♦ ♦ ♦ Vector that contains geometric entity dimension
numbers
Odp ♦ ♦ ♦ Matrix with columns that contain geometric
entity dimension number pairs
Out ♦ ♦ ♦ Output arguments, cell array containing strings
specifying the output arguments
Par ♦ ♦ ♦ Cell array, where each element is a cell array
containing two matrices defining geometric
entity number and parameter values
224 | CHAPTER 1: COMMAND REFERENCE