.. _auto_curve_split_loading_unloading:

*SPLIT THE LOADING/ULOADING CURVE*
==================================

Splits a combined loading/unloading curve into its constituent loading and unloading segments. Use this worker when a raw force-displacement or stress-strain curve contains both ramp-up and ramp-down phases that need to be analysed separately.

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

Classification: **process**.

Tagged: ``curve``, ``force-displacement``, ``loading``, ``segmentation``, ``split``, ``stress-strain``, ``transformation``, ``unloading``.

Inputs
------

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

   * - Label
     - ID
     - Type
     - Default
     - Required
     - Description
   * - Curve from which the loading/unloading is to be separated
     - curvewithloadingand_unloading
     - vector
     - —
     - 
     - The raw input curve (e.g., force-displacement or stress-strain) that contains both loading and unloading phases to be separated; provided as an XY vector.
   * - Segment Length
     - ratio
     - string
     - 0.05
     - 
     - Fractional segment-length threshold (dimensionless, 0–1) used to detect the transition point between loading and unloading; defaults to 0.05 — increase if the split point is missed on noisy curves.
   * - Return Type
     - retyrn_type
     - string
     - both
     - 
     - Selects which portion of the curve to return: 'both' (default) outputs both loading and unloading segments, 'loading' returns only the ascending phase, and 'unloading' returns only the descending phase.

Outputs
-------

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

   * - Label
     - ID
     - Type
     - Description
   * - Loading Unloading Curve
     - loading_unloading_curve
     - vector
     - The extracted curve segment(s) as an XY vector — contains the loading curve, the unloading curve, or both concatenated, depending on the chosen Return Type.

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

.. raw:: html

   <hr style="margin-top:2em">
   <p style="font-size:11px;color:#888">
   Auto-generated from <code>transformation</code> schema. Worker id: <code>curve_split_loading_unloading</code>. Schema hash: <code>ced1ea5ee5f2</code>. Hand-curated docs in <code>workerexamples/</code> override this page when present.
   </p>