.. _auto_curves_sync_x:

*SYNC POINTS SUCH THAT ALL CURVES HAVE THE SAME X-VALUES*
=========================================================

Synchronises a collection of curves so that every curve shares the same set of x-axis values, interpolating (and optionally extrapolating) y-values to the merged x-grid. Use this worker before any operation that requires point-for-point curve alignment, such as averaging, differencing, or batch comparisons.

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

Classification: **process**.

Tagged: ``curve_alignment``, ``extrapolation``, ``interpolation``, ``sync_x``, ``transformations``, ``x_grid``.

Inputs
------

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

   * - Label
     - ID
     - Type
     - Default
     - Required
     - Description
   * - Curves In
     - curves_in
     - vector
     - —
     - 
     - Collection of one or more input curves (x/y vector pairs) to be synchronised onto a common x-grid; accepts multiple curves simultaneously.
   * - Extrapolate
     - extrapolate
     - scalar
     - no
     - 
     - Controls how y-values are computed when a curve's x-range is shorter than the merged grid: 'no' (default) — no extrapolation, values are dropped; 'yes' — standard extrapolation; 'yes_min_zero' — extrapolate but clamp minimum to zero; 'yes_first_last_value' — pad with the first/last known value; 'constant' — hold the boundary constant; 'zero' — pad with zeros.

Outputs
-------

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

   * - Label
     - ID
     - Type
     - Description
   * - curves_sync_x_output_1
     - curves_sync_x_output_1
     - vector
     - The input curves remapped onto the unified x-grid, returned as a vector collection with identical x-values across all curves and interpolated/extrapolated y-values.

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

- data.curve.pair
- 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_sync_x <https://www.d3view.com/api/workflow/example?id=curves_sync_x>`_

.. 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_sync_x</code>. Schema hash: <code>b9c016f5b9a0</code>. Hand-curated docs in <code>workerexamples/</code> override this page when present.
   </p>