.. _auto_curve_splinify:

*FIT THE CURVE USING SPLINES*
=============================

Fits an input curve using spline interpolation, resampling it to a specified number of points while controlling the degree of downsampling via a radius-of-curvature threshold. Use this worker to smooth, resample, or reduce the point density of a curve in a workflow.

When to use
-----------

Classification: **process**.

Tagged: ``curve_fit``, ``downsample``, ``interpolation``, ``resample``, ``spline``, ``splinify``.

Inputs
------

.. list-table::
   :header-rows: 1
   :widths: 20 20 20 20 20 20

   * - Label
     - ID
     - Type
     - Default
     - Required
     - Description
   * - Curve In
     - curve_in
     - vector
     - —
     - 
     - Input curve (x/y vector) to be spline-fitted and resampled; accepts any curve passed from an upstream worker.
   * - RADC
     - rad_c
     - scalar
     - 0.05
     - 
     - Radius-of-curvature downsampling control (dimensionless); lower values produce more aggressive downsampling — default 0.05 is suitable for most smooth curves.
   * - Number Of Points
     - numberof_points
     - scalar
     - 100
     - 
     - Number of evenly-spaced points to return on the fitted spline; default 100 — increase for higher output resolution.

Outputs
-------

.. list-table::
   :header-rows: 1
   :widths: 20 20 20 20

   * - Label
     - ID
     - Type
     - Description
   * - curve_splinify_output_1
     - curve_splinify_output_1
     - vector
     - Spline-fitted output curve (x/y vector) resampled at the requested number of points.

Disciplines
-----------

- data.curve.transform

Runnable example
----------------

A runnable example is registered for this worker. Open the example workflow on the d3VIEW canvas: `/api/workflow/example?id=curve_splinify <https://www.d3view.com/api/workflow/example?id=curve_splinify>`_

.. raw:: html

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   Auto-generated from <code>transformation</code> schema. Worker id: <code>curve_splinify</code>. Schema hash: <code>a78aa554653d</code>. Hand-curated docs in <code>workerexamples/</code> override this page when present.
   </p>