.. _auto_curves_get_shift_offset:

*GET SHIFT OFFSET BETWEEN TWO CURVES*
=====================================

Computes the shift (X-axis offset) required to best align two curves by minimising their distance. Use this worker when you need to quantify how far one curve must be translated along the X-axis to match a reference curve.

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

Classification: **process**.

Tagged: ``curve_alignment``, ``curve_matching``, ``offset``, ``shift``, ``synchronisation``, ``x_shift``.

Inputs
------

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

   * - Label
     - ID
     - Type
     - Default
     - Required
     - Description
   * - Curve 1
     - curve1
     - vector
     - —
     - 
     - Reference curve (X/Y vector pairs) against which the shift is measured; accepts multiple curves — the first entry is used as the reference.
   * - Curve 2
     - curve2
     - vector
     - —
     - 
     - Target curve (X/Y vector pairs) to be shifted relative to Curve 1; the worker finds the X offset that best aligns this curve to the reference.
   * - Num Points
     - dig_points
     - integer
     - 100
     - 
     - Number of evenly spaced interpolation points used when resampling both curves before alignment; default is 100 — increase for higher-resolution matching on densely sampled signals.

Outputs
-------

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

   * - Label
     - ID
     - Type
     - Description
   * - curves_get_shift_offset_output_1
     - curves_get_shift_offset_output_1
     - vector
     - Single-value or curve vector containing the computed X-axis shift offset that aligns Curve 2 to Curve 1; units match the X-axis units of the input curves.

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

.. raw:: html

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   Auto-generated from <code>transformation</code> schema. Worker id: <code>curves_get_shift_offset</code>. Schema hash: <code>9144c0a698d9</code>. Hand-curated docs in <code>workerexamples/</code> override this page when present.
   </p>