.. _auto_curves_add:

*COMPUTE THE ADDITION OF TWO CURVES BY ADDING THE Y-VALUES*
===========================================================

Adds two curves together by summing their y-values element-wise, interpolating onto a common x-axis as needed. Use this worker whenever you need to superimpose two time-history or XY curves into a single resultant curve.

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

Classification: **process**.

Tagged: ``add``, ``addition``, ``curve_math``, ``curves``, ``sum``, ``transformation``, ``y-values``.

Inputs
------

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

   * - Label
     - ID
     - Type
     - Default
     - Required
     - Description
   * - Destination Curve
     - destination_curve
     - vector
     - —
     - 
     - The base (destination) curve whose y-values will be accumulated into; accepts one or more XY vector curves — leave unpopulated if feeding the result directly from an upstream node.
   * - Y Values Of This Curve Will Be Added To The Destination Curve
     - y_valuesofthiscurvewillbeaddedtothedestinationcurve
     - vector
     - —
     - 
     - The addend curve whose y-values are added point-by-point to the destination curve; must share or be interpolatable onto the same x-axis as the destination curve.
   * - When one of the summands is 0.0, set value to 0.0
     - whenoneofthesummandsis0.0,setvalueto0.0
     - scalar
     - linear
     - 
     - Controls zero-masking behaviour: set to 'yes' to force the summed output to 0.0 wherever either summand is exactly 0.0; defaults to 'no' (standard addition is always applied).

Outputs
-------

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

   * - Label
     - ID
     - Type
     - Description
   * - curves_add_output_1
     - curves_add_output_1
     - vector
     - The resulting XY vector curve whose y-values are the element-wise sum of the destination curve and the addend curve, defined over their common x-axis range.

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

.. raw:: html

   <hr style="margin-top:2em">
   <p style="font-size:11px;color:#888">
   Auto-generated from <code>transformation</code> schema. Worker id: <code>curves_add</code>. Schema hash: <code>6c432de12882</code>. Hand-curated docs in <code>workerexamples/</code> override this page when present.
   </p>