Use a Boundary Point Probe (

) to monitor the development of a scalar-valued quantity (real or complex-valued number) from a dynamic simulation (time-dependent, frequency, parametric). By default a
Point Probe Expression subnode is added, or right-click
Boundary Point Probe to add additional subnodes.
When working with multiple frames, select a Frame —
Spatial,
Material,
Geometry, or
Mesh — followed by the coordinate names: typically
(x, y, z) or
(X, Y, Z) depending on the physics in 3D.
Enter the Coordinates. A red dot indicates the position of the point on the selected surface in the
Graphics window. Click the surface to move the point, or enter
x,
y, and
z coordinates. If the point is not on the boundary, the probe location becomes the closest point on the boundary, with coordinates indicated by
On surface under the fields.