.. _auto_curve_set_y_at_x:

*CURVE SET Y AT X*
==================

Finds the point in a curve whose X value matches the given X, then overwrites its Y value with a new Y. Use this worker when you need to surgically edit a single data point in a curve without affecting the rest of the series.

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

Classification: **process**.

Tagged: ``curve``, ``point_edit``, ``set_y``, ``transform``, ``y_at_x``.

Inputs
------

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

   * - Label
     - ID
     - Type
     - Default
     - Required
     - Description
   * - Base Curve
     - base_curve
     - vector
     - —
     - 
     - The input curve (X/Y vector) to be modified; the worker locates the target point by its X coordinate and replaces its Y value in-place.
   * - X
     - x
     - scalar
     - —
     - 
     - The X coordinate (scalar) of the point to be updated; must match an existing X value in the base curve.
   * - New X
     - new_y
     - scalar
     - —
     - 
     - The replacement Y value (scalar) to assign to the curve point located at the specified X coordinate.

Outputs
-------

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

   * - Label
     - ID
     - Type
     - Description
   * - curve_set_y_at_x_output_1
     - curve_set_y_at_x_output_1
     - vector
     - The modified curve with the Y value at the specified X replaced by the new Y; all other points remain unchanged.

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_y_at_x <https://www.d3view.com/api/workflow/example?id=curve_set_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_set_y_at_x</code>. Schema hash: <code>3f88782388f2</code>. Hand-curated docs in <code>workerexamples/</code> override this page when present.
   </p>