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Using the default setting, Smooth, edges of the filter domain become smooth instead of consisting of entire elements. For this setting, select the User derivatives check box to use cubic (Hermite) interpolation in the smooth plot filter. Using derivatives can improve the plot if the expression that is plotted is not approximated well over each element by a linear function.
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Select All to include all elements for which all element nodes (that is, the entire element) fulfill the criterion in the logical expression.
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Select At least one to include all elements for which at least one element node fulfills the criterion in the logical expression (that is, elements that fully or partially fulfill the expression).
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Select At least one but not all to include all elements for which at least one of the element nodes, but not all of them, fulfill the criterion in the logical expression. The last option is useful for making a filter that shows the plot for a zone around a boundary where the logical expression becomes true.
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For the Filter nodes under the Point Graph, Global, Nyquist, Admittance Graph, Impedance Graph, and Reflection Graph nodes, this section is called Point Selection because the filtering is done for points rather than elements.
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