Splines digitizing tool (spline = a chain of lines). Comes with a Processing algorithm for converting lines into splines.
A modified cubic Hermite spline interpolator is used to obtain continuous piecewise third-degree polynomials between knots (known spline points). Each piece is converted to a chain of lines which is then simplified with Douglas-Peuker algorithm. The Processing algorithm supports vertices' z and m values - they are interpolated linearly between knots.
Version | QGIS >= | QGIS <= | Date |
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