.. _auto_curve_negative_to_zero:

*SET ALL NEGATIVE VALUES TO ZERO*
=================================

Clamps all negative Y-values of an input curve to zero, leaving non-negative values unchanged. Use this worker to remove unphysical negative regions from a signal (e.g., force, stress, or energy curves) before further processing or plotting.

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

Classification: **process**.

Tagged: ``clamp``, ``curve``, ``floor_zero``, ``negative_to_zero``, ``signal_cleanup``.

Inputs
------

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

   * - Label
     - ID
     - Type
     - Default
     - Required
     - Description
   * - Curves
     - curve
     - vector
     - —
     - 
     - Input curve (X-Y vector) whose negative Y-values will be replaced with zero; accepts a single curve and is optional — if omitted the worker returns an empty result.

Outputs
-------

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

   * - Label
     - ID
     - Type
     - Description
   * - curve_negative_to_zero_output_1
     - curve_negative_to_zero_output_1
     - vector
     - Transformed curve identical to the input but with all negative Y-values set to zero; X-values and positive Y-values are preserved exactly.

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

.. 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_negative_to_zero</code>. Schema hash: <code>2bcd968a6418</code>. Hand-curated docs in <code>workerexamples/</code> override this page when present.
   </p>