Selection (Plot Attribute)
The Selection subnode () provides the possibility to define a selection for some plots. Add it to make the plot appear only in some geometric entities (some domains, for example). Arrow Line, Arrow Point, Arrow Surface, Arrow Volume, Contour, Coordinate System Line, Coordinate System Surface, Coordinate System Volume, Isosurface, Line, Max/Min Line, Max/Min Surface, Max/Min Volume, Mesh, Multislice, Principal Stress Volume, Principal Stress Surface, and Principal Stress Line, Slice, Streamline, Streamline Multislice, Surface, and Volume plots support the Selection attribute. In the Model Builder, add one of those plot types; then right-click the plot node and select Selection.
Selection
From the Geometric entity level list, choose any geometric entity level between the element dimension where the plot evaluates and the plot group’s dimension, if applicable. For example, for a Surface plot in a 3D plot group, Boundary (the default) and Domain are available. If you choose Domain for a surface plot, the boundaries that belong to the selected domains are selected, so it can provide a quick way of selecting multiple boundaries.
From the Selection list, choose Manual to select the geometric entities (domains or boundaries, for example, depending on the plot type) directly in the Graphics window or using the tools in the Selection section. You can also select All domains or All boundaries, for example, or any applicable selection defined in the model.
Evaluation
The Evaluation section is available for plots that evaluate on boundaries — for example, a Surface plot in a 3D plot group — if the Geometric entity level is set to Domain.
From the Evaluate in list, choose Adjacent boundaries (the default) or Selected domains to specify where to map the result of the evaluation. When Selected domains is chosen, evaluations on boundaries are mapped to their adjacent domains. This can help produce more accurate plots when the adjacent domains have strongly contrasting material properties, for example. If you choose Selected domains, you can also control whether boundaries external or internal to the selected domain are included in the plot by selecting or clearing the Exterior boundaries and Interior boundaries checkboxes, respectively.
Revolution Selection
This section is only available for applicable 3D plot types, such as Surface plots, using a Revolution 2D dataset. You can then control which parts of the revolved geometry to evaluate:
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Select the Evaluate the mantle to evaluate and plot the solution on the mantle of the revolved 2D geometry.
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Select the Evaluate the start cap to evaluate and plot the solution on the start cap (at the start angle) if end caps have been added.
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Select the Evaluate the end cap to evaluate and plot the solution on the end cap (at the ending angle) if end caps have been added.
See Selection (Dataset Attribute) for information about adding a Selection subnode to a dataset, which can be an alternative to a Selection subnode for a plot if you want to apply the same selection to many plots.