3D Cross-Section Line Plots
A 3D line/extrusion cross-section plot visualizes a quantity in one or several lines in time, along a parameter range, or for several eigenvalues. This example uses the Prestressed Micromirror model from the MEMS Module Application Library.
Creating a 3D Cross-Section Plot Using a Cut Line dataset
1
Create a Cut Line 3D dataset. Enter the 3D coordinates for the plot. Set the starting point and endpoint of the line under x, y, and z for Point 1 and Point 2.
2
Click the Plot button ().
3
Add a 1D Plot Group (). In the Settings window, select Cut Line 3D as the Dataset.
4
Add a Line Graph. For the dataset, From parent uses the same dataset as the plot group to which it belongs. Settings under y-Axis Data and x-Axis Data determine the quantity on those axes.
5
Continue to define the Line Graph as needed. See Line Graph.
6
Click the Plot button (), right-click the node, and select Plot, or press F8.
Creating Interactive 3D Cross-Section Line Plots
1
In the Model Builder, click a 3D Plot Group node to display the buttons available on the Plot Group contextual toolbar. In the main toolbar, click the cross-section buttons as needed.
The first time the cross-section toolbar buttons are clicked, a Cut Line 3D dataset and a 1D Plot Group with a Line Graph are added to the Model Builder.
Define a Cut Line:
a
On the Plot Group contextual toolbar, click the First Point for Cut Line button (). Click a starting point on the geometry. COMSOL Multiphysics chooses default coordinates as a vertical line intersecting the data in the middle.
b
Click the Second Point for Cut Line button (). Click an endpoint on the geometry. A line connecting the two points is created in the Graphics window.
c
d
Click the 1D Plot Group to view the Line Graph based on the selected points.
Define a Cut Line — Direction:
a
On the Plot Group contextual toolbar, click the Cut Line Direction button ().
b
c
Click the 1D Plot Group node to view the Line Graph based on the selected points.
Define a Cut Line — Surface Normal:
a
On the Plot Group contextual toolbar, click the Cut Line Surface Normal button ().
b
c
Click the 1D Plot Group node to view the Line Graph based on the selected points.
2
3
See Table 21-11 for links to all the plots.