COMSOL Multiphysics™

sphere3, sphere2
Purpose
sphere3, sphere2
Construction function for spherical geometry objects.
Syntax
Description
obj = sphere3
obj = sphere2
obj = sphere3(r)
obj = sphere2(r)
obj = sphere3(r,...)
obj = sphere2(r,...)
obj = sphere3 creates a solid sphere geometry object with center at the origin and
semi-axes equal to 1. sphere3 is a subclass of ellipsoid3.
obj = sphere3(r,...) creates a solid sphere object with radius r. r is a positive
real scalar, or a string that evaluates to a positive real scalar, given the evaluation
context provided by the property const.
The functions sphere3/sphere2 accept the following property/values:
TABLE 1-41: VALID PROPERTY/VALUE PAIRS
PROPERTY VALUE DEFAULT DESCRIPTION
axis
Vector of
reals or cell
array of
strings
[0 0] Local z-axis of the object
const Cell array of {} Evaluation context for string inputs
strings
pos
Vector of [0 0] Position of the object
reals or cell
array of
strings
rot real or string 0 Rotational angle about axis (radians)
axis sets the local z-axis, stated either as a directional vector of length 3, or as a
1-by-2 vector of spherical coordinates. axis is a vector of real scalars, or a cell array
of strings that evaluate to real scalars, given the evaluation context provided by the
property const. See gencyl3 for more information on axis.
pos sets the position of the center of the object. pos is a vector of real scalars, or a
cell array of strings that evaluate to real scalars, given the evaluation context
provided by the property const.
rot is an intrinsic rotational angle for the object, about its local z-axis provided by
the property axis. pos is a real scalar, or a string that evaluate to a real scalar, given
392 | CHAPTER 1: COMMAND REFERENCE