Max/Min Volume, Max/Min Surface, Max/Min Line, Max/Min Point
Use the Max/Min Volume (), Max/Min Surface (2D: ); 3D: ), Max/Min Line (2D: ); 3D: ), and Max/Min Point (2D: ; 3D: ) plots to plot the maximum and minimum values of an expression and the points there they are attained within the geometry.
When plotting the maximum and minimum value, an associated table appears in the Table window (underneath the Graphics window if using the default COMSOL Desktop layout). The table contains the maximum and minimum values along with the coordinates for the corresponding locations. The coordinate columns’ titles contain the space variable names from the dataset, if you use a Cut Plane dataset, for example. Add Deformation, Filter, Selection (Plot Attribute), or Transparency (3D only) subnodes as needed (note that, for a Max/Min Point plot, the At least one but not all option in the Filter subnode is not applicable). Right-click a 2D Plot Group or 3D Plot Group to add these plots from the More Plots submenu.
Go to Common Results Node Settings for links to information about these sections: Data, Expression, Title, and Inherit Style.
Display
Select an option from the Display list to determine what to display: Min and max (the default), Min, or Max.
Text Format
In this section, you can control the text format for the markers using the following settings:
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Enter a Display precision for the number of decimals displayed in the labels. The default is 6.
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Select the Prepend the position check box to include the position of the marker (its space coordinates) before the maximum and minimum values.
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Select the Include unit check box to add the unit of the expression for which the plot shows the maximum or minimum value.
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If you want to add a prefix or a suffix to the labels for the minimum and maximum values, add them in the Prefix and Suffix fields. The same prefix and suffix are used for the minimum and maximum labels.
Advanced
Under Advanced, select the evaluation point type from the Point type list:
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 Lagrange points (the default) to evaluate the maximum or minimum value in the Lagrange points. Select a Lagrange order (default: 5; the Lagrange order is the number of partitions of an element edge) to adjust the accuracy of the minimum or maximum values.
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Node points (the default) to evaluate the maximum or minimum value in the node points of the extended mesh.
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 Integration points to evaluate the maximum or minimum value in the integration points. Select an Integration order (default: 4) to adjust the accuracy of the minimum or maximum values.
If such solution data is not available, instead enter a refinement as an integer, 1 or higher, in the Element refinement field (default: 2).
The Recover default is Off because recovery takes processing time. To edit the default and use polynomial-preserving recovery and recover fields with derivatives such as stresses or fluxes with a higher theoretical convergence than smoothing, from the Recover list, select Within domains to perform recovery inside domains or Everywhere to apply recovery to all domain boundaries.
Coloring and Style
The Show point check point is selected by default to show the points for the minimum and maximum values.
From the Color list, choose the color to use for the maximum and minimum values; choose Custom to choose a custom color from a color palette; choose From theme (the default) to use the color from the current color theme; or choose Custom to choose a custom color from a color palette. Select the frame background color from the Background color list.
From the Background color list, choose a background color for a rectangular area around the displayed maximum and minimum values; the default is None, which means that there is no background color. Choose From theme to use a background color that changes with the selected color theme.
From the Anchor point list, choose the position of the anchor point relative to the displayed values: Upper right, Upper middle, Upper left (the default), Middle right, Center, Middle left, Lower right, Lower middle, or Lower left.
From the Orientation list, choose Horizontal (the default) or Vertical, if you want the values to be displayed vertically instead of horizontally.
Select the Show frame check box to display the maximum and minimum values in a rectangular frame. Select the frame background color from the Background color list.