.. _auto_curve_positive_to_zero:

*SET ALL POSITIVE VALUES TO ZERO*
=================================

Clamps all positive Y-values in a curve to zero, leaving zero and negative values unchanged. Use this worker when you need to suppress positive excursions from a signal — for example, isolating compressive-only regions of a force-displacement or stress-time curve.

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

Classification: **process**.

Tagged: ``clamp``, ``curve_transform``, ``positive_to_zero``, ``signal_clipping``, ``zeroing``.

Inputs
------

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

   * - Label
     - ID
     - Type
     - Default
     - Required
     - Description
   * - Curve
     - curve
     - vector
     - —
     - 
     - Input curve (X/Y vector) whose positive Y-values will be set to zero; negative and zero values are preserved as-is.

Outputs
-------

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

   * - Label
     - ID
     - Type
     - Description
   * - curve_positive_to_zero_output_1
     - curve_positive_to_zero_output_1
     - vector
     - Transformed curve identical to the input except all previously positive Y-values have been replaced with zero.

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_positive_to_zero <https://www.d3view.com/api/workflow/example?id=curve_positive_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_positive_to_zero</code>. Schema hash: <code>da5d140587f6</code>. Hand-curated docs in <code>workerexamples/</code> override this page when present.
   </p>