.. _auto_curve_sync_3x:

*SYNC THE X-VALUES FROM 3 CURVES*
=================================

Synchronises the x-axis sampling of three curves so that all share a common set of x-values, interpolating y-values as needed. Use this worker when downstream operations require curve pairs or triplets to be defined on identical x-grids before comparison, arithmetic, or correlation.

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

Classification: **process**.

Tagged: ``alignment``, ``curve``, ``interpolation``, ``sync``, ``three-curves``, ``transformations``, ``x-axis``.

Inputs
------

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

   * - Label
     - ID
     - Type
     - Default
     - Required
     - Description
   * - Curve 1
     - curve_1
     - vector
     - —
     - ✓
     - Primary input curve (vector of x/y pairs); drives the reference x-grid used for synchronisation — required, all other curves are resampled to match it.
   * - Curve 2
     - curve_2
     - vector
     - —
     - 
     - Second curve (vector of x/y pairs) to be resampled onto the x-grid of Curve 1; if a CurveGroup is supplied, only the first member is used. Leave unconnected to perform a two-curve or single-curve pass-through.
   * - Curve 3
     - curve3
     - vector
     - —
     - 
     - Third curve (vector of x/y pairs) to be resampled onto the x-grid of Curve 1; if a CurveGroup is supplied, only the first member is used. Leave unconnected if only two curves need synchronisation.

Outputs
-------

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

   * - Label
     - ID
     - Type
     - Description
   * - curve_sync_3x_output_1
     - curve_sync_3x_output_1
     - vector
     - Synchronised curve set returned as a vector (or CurveGroup) in which all three input curves share a common x-axis grid, ready for downstream pair-wise operations or correlation.

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

- 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=curve_sync_3x <https://www.d3view.com/api/workflow/example?id=curve_sync_3x>`_

.. raw:: html

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   Auto-generated from <code>transformation</code> schema. Worker id: <code>curve_sync_3x</code>. Schema hash: <code>ed4c887b368c</code>. Hand-curated docs in <code>workerexamples/</code> override this page when present.
   </p>