.. _auto_curve_set_constant_y_value:

*SET CONSTANT Y-VALUE TO ALL X-POINTS*
======================================

Replaces every Y value of the input curve with a single constant, while preserving all original X points. Use this worker to flatten a curve or create a constant baseline from an existing X-axis grid.

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

Classification: **process**.

Tagged: ``constant``, ``curve``, ``flatten``, ``set_constant_y_value``, ``transform``, ``y-value``.

Inputs
------

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

   * - Label
     - ID
     - Type
     - Default
     - Required
     - Description
   * - Curve
     - curve
     - vector
     - —
     - 
     - Input curve (X/Y vector) whose Y values will be overwritten; all original X points are preserved in the output.
   * - Constant Y-value
     - y_value
     - text
     - 0
     - 
     - Scalar constant to assign to every Y point of the curve; defaults to 0 if left unset.

Outputs
-------

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

   * - Label
     - ID
     - Type
     - Description
   * - Curve with constant value
     - curve_set_constant_value_y
     - vector
     - Output curve with the same X points as the input but with every Y value replaced by the specified constant.

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

.. 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_set_constant_y_value</code>. Schema hash: <code>24f8379e4279</code>. Hand-curated docs in <code>workerexamples/</code> override this page when present.
   </p>