.. _auto_curves_digitize:

*CREATE A NEW SET OF CURVES BY USING A INTERVAL OF XMAX-MAX/NP AS SPECIFIED BELOW*
==================================================================================

Resamples one or more curves onto a uniform x-axis grid by dividing the [xmin, xmax] range into a specified number of equidistant intervals. Optionally applies Ramer–Douglas–Peucker (RDP) smoothing and supports symmetric resampling about a user-defined mid-point. Use this worker to normalise curves to a common x-resolution before comparison or further processing.

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

Classification: **process**.

Tagged: ``curve_transform``, ``digitize``, ``equidistant``, ``interpolate``, ``rdp``, ``resample``, ``smoothing``.

Inputs
------

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

   * - Label
     - ID
     - Type
     - Default
     - Required
     - Description
   * - Curves
     - curves
     - vector
     - —
     - 
     - One or more input curves (x/y vector pairs) to be resampled; accepts multiple curves simultaneously.
   * - Num of Intervals
     - num_points
     - scalar
     - 100
     - 
     - Number of equidistant intervals to create between the first and last x-value of each curve; default is 100 (produces 101 points).
   * - Mid Point
     - mid_point
     - integer
     - 0.0
     - 
     - X-value about which equal numbers of intervals are placed on each side; defaults to the initial x-value of the curve (0.0).
   * - Add RDP Smoothing
     - add_rdp
     - string
     - no
     - 
     - Set to 'yes' to apply Ramer–Douglas–Peucker smoothing after resampling, reducing unnecessary points while preserving curve shape; default is 'no'.
   * - Rdp Espsilon
     - rdp_espsilon
     - integer
     - 1.0
     - 
     - Tolerance (epsilon) used by the RDP algorithm to determine which points to retain; only active when Add RDP Smoothing is 'yes'; default is 1.0.
   * - Sync First Last
     - sync_first_last
     - string
     - no
     - 
     - Set to 'yes' to synchronise the first and last x-values across all input curves before digitising, ensuring a shared domain; default is 'no'.

Outputs
-------

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

   * - Label
     - ID
     - Type
     - Description
   * - curves_digitize_output_1
     - curves_digitize_output_1
     - vector
     - Resampled output curves on a uniform x-axis grid, one output curve per input curve, carrying the same units as the originals.

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=curves_digitize <https://www.d3view.com/api/workflow/example?id=curves_digitize>`_

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   Auto-generated from <code>transformation</code> schema. Worker id: <code>curves_digitize</code>. Schema hash: <code>d979c3665fb9</code>. Hand-curated docs in <code>workerexamples/</code> override this page when present.
   </p>