edit spline in Autocad 2018 - AutoCAD 2018 SPLINEDIT command tutorial

splinedit command Modifies the data that defines a spline, such as a number and weight of control vertices, the fit tolerance, and the starting and ending tangents.

Note: SPLINEDIT automatically converts spline-fit polylines to splines even if you immediately exit SPLINEDIT after selecting the spline-fit polyline.

The data that defines a spline is represented in one of two formats: as a control frame or as fit points. The format can change depending on how the spline was originally created, the options selected from the grip menus, or the options used in SPLINEDIT.

You can change any of following data:

- Control frame data consists of control vertices, the polynomial degree of the spline, and the weights assigned to each control vertex.

- Fit data consists of fit points, knot parameterization, the fit tolerance, and the tangents at the endpoints of the spline.

Note: Switching from displaying control vertices to fit points automatically changes the selected spline to degree 3. Splines originally created using higher-degree equations will likely change shape as a result. In addition, if the spline was created using a positive tolerance value, the fit points will be relocated to the knots on the spline, and the tolerance value is reset to 0.