.. _auto_curve_critical:

*DOWNSIZE BY TAKING ONLY CRITICAL POINTS*
=========================================

Reduces a curve to its critical points only (local minima, maxima, and inflection points), discarding intermediate data points to produce a compact representation. Use this worker to downsample dense time-history or signal curves while preserving their essential shape and turning points.

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

Classification: **process**.

Tagged: ``critical_points``, ``curve_reduction``, ``downsample``, ``inflection``, ``maxima``, ``minima``, ``signal_simplification``.

Inputs
------

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

   * - Label
     - ID
     - Type
     - Default
     - Required
     - Description
   * - Curve 1
     - curve1
     - vector
     - —
     - 
     - Input curve (x/y vector pair) to be reduced; supply any dense time-history, force-displacement, or signal curve — the worker will extract only its critical points.

Outputs
-------

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

   * - Label
     - ID
     - Type
     - Description
   * - curve_critical_output_1
     - curve_critical_output_1
     - vector
     - Reduced output curve containing only the critical points (local minima, maxima, and inflection points) of the input curve, as an x/y vector pair.

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

- data.curve.transform
- data.signal_processing

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

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

.. 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_critical</code>. Schema hash: <code>82abbc8fa4bf</code>. Hand-curated docs in <code>workerexamples/</code> override this page when present.
   </p>