.. _auto_curve_lookup_yvalueat:

*LOOKUP Y-VALUE FROM A GIVEN X-VALUE*
=====================================

Performs a point lookup on a curve, returning the interpolated Y-value at a specified X-value. Use this worker whenever you need to extract a single scalar response from a curve at a known abscissa (e.g., reading force at a given displacement, or acceleration at a specific time).

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

Classification: **process**.

Tagged: ``curve``, ``interpolation``, ``lookup``, ``point-query``, ``scalar``, ``y-value``.

Inputs
------

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

   * - Label
     - ID
     - Type
     - Default
     - Required
     - Description
   * - Curve To Be Looked Up
     - curvetobelookedup
     - vector
     - —
     - ✓
     - The input curve (X/Y vector) from which the Y-value will be interpolated; must contain the target X-value within its domain.
   * - X Value
     - x_value
     - float
     - 0.0
     - 
     - The X-coordinate at which the corresponding Y-value is to be looked up via interpolation; defaults to 0.0 if not specified.

Outputs
-------

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

   * - Label
     - ID
     - Type
     - Description
   * - curve_lookup_yvalueat_output_1
     - curve_lookup_yvalueat_output_1
     - scalar
     - The interpolated scalar Y-value on the input curve at the specified X-coordinate.

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

.. 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_lookup_yvalueat</code>. Schema hash: <code>871a156eb013</code>. Hand-curated docs in <code>workerexamples/</code> override this page when present.
   </p>