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If Two points is selected, enter x and y coordinates (2D) or x, y, and z coordinates (3D) in the Point 1 and Point 2 fields ((SI unit: m). If Point and direction is selected, enter x and y coordinates (2D) or x, y, and z coordinates (3D) in the Point (SI unit: m) and Direction fields.
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The Bounded by points check box is selected by default to constrain the line between the defined points.
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In 3D, select the Snap to closest boundary check box to snap the selected points to the closest boundary in the geometry. Use this option when evaluating a variable that is available on boundaries but not in domains. Otherwise, leave the snapping off (the default setting) to avoid the additional computational cost. However, snapping always happens if the underlying dataset has a shell geometry.
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For a Cut Line 3D example, see Thin-Film Resistance: Application Library path COMSOL_Multiphysics/Electromagnetics/thin_film_resistance.
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