.. _auto_curves_overlay:

*OVERLAY TWO OR MORE CURVES*
============================

Overlays two or more curves into a single combined output by merging a primary (base) curve set with one or more additional curves. Use this worker whenever you need to visually or analytically combine multiple time-history or XY curves into one overlay for comparison or plotting.

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

Classification: **process**.

Tagged: ``combine``, ``curves``, ``merge``, ``multi-curve``, ``overlay``, ``time-history``, ``visualization``.

Inputs
------

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

   * - Label
     - ID
     - Type
     - Default
     - Required
     - Description
   * - Base Curve
     - base_curve
     - vector
     - —
     - 
     - Primary curve(s) to serve as the reference layer in the overlay; accepts one or more XY/time-history vectors and is optional when all curves are supplied via the overlay input.
   * - Curve To Be Overlaid
     - curvetobeoverlaid
     - vector
     - —
     - 
     - One or more additional curves to be stacked on top of the base curve; the final render order reflects the complete concatenated list of all curves provided across both inputs.

Outputs
-------

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

   * - Label
     - ID
     - Type
     - Description
   * - curves_overlay_output_1
     - curves_overlay_output_1
     - vector
     - Single merged vector output containing all supplied curves combined into one overlay object, preserving individual curve labels and their concatenated order.

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

- cae.postprocessing.visualization
- data.curve.pair

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

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

.. 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_overlay</code>. Schema hash: <code>e3fae6dc0778</code>. Hand-curated docs in <code>workerexamples/</code> override this page when present.
   </p>