.. _auto_curve_offset_y_at_x:

*OFFSET CURVES Y VALUE FROM A VALUE AT A GIVEN X*
=================================================

Shifts a curve vertically so that its Y value at a specified X position becomes zero, effectively offsetting the entire curve by the Y value found at that X coordinate. Use this worker to zero-reference or baseline a curve at a known X location.

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

Classification: **process**.

Tagged: ``baseline``, ``curve``, ``offset``, ``shift``, ``transform``, ``y_offset``, ``zero_reference``.

Inputs
------

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

   * - Label
     - ID
     - Type
     - Default
     - Required
     - Description
   * - Curve To Be Offset By Shifting The Initial Non-zero Point
     - curvetobeoffsetbyshiftingtheinitialnon-zeropoint
     - vector
     - —
     - 
     - The input curve (X/Y vector) to be vertically offset; the Y value at the specified X position will be subtracted from all Y values to zero-reference the curve at that point.
   * - X Value
     - x_value
     - scalar
     - 0
     - 
     - The X coordinate at which the curve's Y value is sampled to compute the vertical offset; defaults to 0 (i.e., offset by the Y-intercept).

Outputs
-------

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

   * - Label
     - ID
     - Type
     - Description
   * - curve_offset_y_at_x_output_1
     - curve_offset_y_at_x_output_1
     - vector
     - The vertically shifted output curve (X/Y vector) whose Y value at the given X position is now zero.

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

- 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=curve_offset_y_at_x <https://www.d3view.com/api/workflow/example?id=curve_offset_y_at_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>curve_offset_y_at_x</code>. Schema hash: <code>94ce10c0ac75</code>. Hand-curated docs in <code>workerexamples/</code> override this page when present.
   </p>