.. _auto_curves_get_axis_from_group:

*GET CURVES OF A SINGLE AXIS FROM A GROUPED XYZ CURVES. THE NUMBER OF CURVES IS ASSUMED TO BE DIVISIBLE BY 3*
=============================================================================================================

Extracts all curves belonging to a single spatial axis (X, Y, or Z) from a grouped XYZ curve set. The input curve count must be divisible by 3, as curves are assumed to be interleaved in X/Y/Z triplets. Use this worker to isolate one axis component from a vectorial time-history group before further processing.

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

Classification: **process**.

Tagged: ``axis_extraction``, ``curve_group``, ``grouped_curves``, ``transformations``, ``xyz``, ``xyz_triplet``.

Inputs
------

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

   * - Label
     - ID
     - Type
     - Default
     - Required
     - Description
   * - Curves
     - curves
     - vector
     - —
     - 
     - Vector of grouped XYZ curves whose total count must be divisible by 3; each consecutive triplet is treated as (X, Y, Z) components of a single channel.
   * - Axis Type
     - axis_type
     - string
     - eq
     - 
     - Spatial axis to extract from the group — one of 'x', 'y', or 'z'; defaults to 'x' (eq). Determines which every-third curve is returned.

Outputs
-------

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

   * - Label
     - ID
     - Type
     - Description
   * - curves_get_axis_from_group_output_1
     - curves_get_axis_from_group_output_1
     - vector
     - Vector of curves corresponding to the selected axis, containing every third curve from the input group that maps to the chosen X, Y, or Z component.

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

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   Auto-generated from <code>transformation</code> schema. Worker id: <code>curves_get_axis_from_group</code>. Schema hash: <code>3ff6151cd4c7</code>. Hand-curated docs in <code>workerexamples/</code> override this page when present.
   </p>