.. _auto_curves_remove_negative_slope:

*REMOVE LAST NEGATIVE SLOPE*
============================

Trims each input curve at the point where the last negative slope begins, effectively removing any downward tail at the end of the curve. An optional percentage parameter allows fine-tuning of the truncation threshold. Use this worker to clean up force-displacement or stress-strain curves that droop at their terminal end.

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

Classification: **process**.

Tagged: ``curve_trimming``, ``force_displacement``, ``postprocessing``, ``remove_negative_slope``, ``slope``, ``stress_strain``, ``tail_removal``.

Inputs
------

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

   * - Label
     - ID
     - Type
     - Default
     - Required
     - Description
   * - Curves To Be Operated On
     - curvestobeoperatedon
     - vector
     - —
     - 
     - One or more curves (e.g. force-displacement or stress-strain) whose trailing negative-slope segments should be removed; accepts a vector/group of curve objects.
   * - Percentage
     - percentage
     - text
     - 0.05
     - 
     - Fractional threshold (0–1) used to locate the truncation point; defaults to 0.05 (5%), meaning the last point where the slope is still within 5% of the last positive slope — leave at default unless the curve tail requires a tighter or looser cut-off.

Outputs
-------

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

   * - Label
     - ID
     - Type
     - Description
   * - curves_remove_negative_slope_output_1
     - curves_remove_negative_slope_output_1
     - vector
     - Processed curves with the trailing negative-slope region removed, returned as a vector/group of curves in the same format as the input.

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

.. raw:: html

   <hr style="margin-top:2em">
   <p style="font-size:11px;color:#888">
   Auto-generated from <code>transformation</code> schema. Worker id: <code>curves_remove_negative_slope</code>. Schema hash: <code>9f2e26dae5bf</code>. Hand-curated docs in <code>workerexamples/</code> override this page when present.
   </p>