About the Spline Modification User Interface
To modify a spline, select the spline and click 
, or double-click the spline in the Sketcher window, the Spline tab opens.
, or double-click the spline in the Sketcher window, the Spline tab opens.Commands
Use the commands to specify interpolation or control points when changing x or y coordinates. In addition, you can perform the following functions:
• Click 
Control Points to set the type of editing outside the Spline editing tab. When you select this command, you cannot change the Edit Type.
Control Points to set the type of editing outside the Spline editing tab. When you select this command, you cannot change the Edit Type.• Click 
Interpolation Points to modify spline using interpolation points.
Interpolation Points to modify spline using interpolation points.• Click Control Points 
to modify spline using control points.
to modify spline using control points.• Click 
Display Tools to show the curvature analysis tools.
Display Tools to show the curvature analysis tools.Tabs
• Point—Change the x and y coordinates for interpolation. Also, move points to an absolute value or relative to the current value.
• Fit—Remove redundant data by the following methods:
◦ Sparse—Remove within a deviation tolerance.
◦ Smooth—Remove by averaging.
• File—From the File tab you can:
◦ Associate spline points with a coordinate system
◦ Read point coordinates from a file
◦ Save point coordinates
◦ Display coordinate information
◦ Change the coordinate system to Cartesian or Polar.
Shortcut Menu
Right-click a point on the spline in the Sketcher window to access the shortcut commands:
• Add Point—Add a point.
• Delete Point—Delete a point (includes end points).
• Pick From List—Open the Pick From List dialog box.