.. _auto_curves_clip_to_delay_failure:

*CLIP CURVE TO DELAY NEGATIVE Y-VALUE*
======================================

Clips one or more curves by adjusting the slope of the tail segment so that the extrapolated y-value crosses zero only after a specified multiple of the original x-maximum, effectively delaying the onset of negative y-values. Use this worker to post-process failure or damage curves where a premature negative y-intercept would cause solver instability or unrealistic behaviour.

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

Classification: **process**.

Tagged: ``clip``, ``curve``, ``delay_failure``, ``extrapolation``, ``failure_curve``, ``negative_y``, ``tail_slope``.

Inputs
------

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

   * - Label
     - ID
     - Type
     - Default
     - Required
     - Description
   * - Curve
     - curve
     - vector
     - —
     - 
     - One or more input curves (x/y vector pairs) whose tail slope will be adjusted to delay the y=0 crossing; accepts multiple curves in a single pass.
   * - Segment Size In Terms Of Percentage Of Points
     - per_p
     - scalar
     - 0.05
     - 
     - Tail-segment size expressed as a fraction of the total number of curve points (e.g. 0.05 = last 5 % of points); default 0.05 is a reasonable starting value for most curves.
   * - Max Limit
     - max_limit
     - scalar
     - 5
     - 
     - Multiplier applied to the curve's x-maximum: the adjusted slope ensures the extrapolated y-value turns negative no sooner than max_limit × x_max (e.g. default 5 means the zero-crossing is pushed past 5× the original x-range).

Outputs
-------

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

   * - Label
     - ID
     - Type
     - Description
   * - Clipped Curves
     - curves_clip_o
     - vector
     - Tail-adjusted output curves in the same x/y vector format as the inputs, with slopes modified so the y=0 intersection is delayed beyond max_limit × x_max.

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

.. raw:: html

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   <p style="font-size:11px;color:#888">
   Auto-generated from <code>transformation</code> schema. Worker id: <code>curves_clip_to_delay_failure</code>. Schema hash: <code>971cbba01612</code>. Hand-curated docs in <code>workerexamples/</code> override this page when present.
   </p>