.. _auto_curve_get_bilinear_stats:

*COMPUTE BILINEAR STATS*
========================

Fits a bilinear approximation to an input curve and returns key statistical parameters describing the two-segment linear fit (e.g., breakpoint location, slopes, intercepts). Use this worker when you need a compact, interpretable bilinear characterisation of a stress-strain or force-displacement curve.

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

Classification: **process**.

Tagged: ``bilinear``, ``breakpoint``, ``curve_stats``, ``force-displacement``, ``slope``, ``stress-strain``, ``transformations``, ``two-segment``.

Inputs
------

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

   * - Label
     - ID
     - Type
     - Default
     - Required
     - Description
   * - Curve
     - curve
     - vector
     - —
     - 
     - Input XY curve (e.g., force-displacement or stress-strain) supplied as a two-column vector; the worker fits the bilinear model to this data. Optional — if omitted, the worker returns empty/null outputs.

Outputs
-------

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

   * - Label
     - ID
     - Type
     - Description
   * - curve_bilinear_stats_output_1
     - curve_bilinear_stats_output_1
     - keyvalue
     - Key-value map of bilinear fit statistics, typically including breakpoint coordinates (x_break, y_break), pre- and post-break slopes, and intercepts for each linear segment.

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

- data.curve.transform
- data.statistics
- engineering.material.characterization

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

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

.. 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_get_bilinear_stats</code>. Schema hash: <code>e2e890128062</code>. Hand-curated docs in <code>workerexamples/</code> override this page when present.
   </p>