.. _auto_curve_lookup_xmaxp:

*GET THE VALUE OF Y BASED ON A PERCENTAGE VALUE OF X. FOR EXAMPLE, Y(50%XA)*
============================================================================

Looks up the Y value on a curve at a specified percentage of the curve's maximum X value (e.g., Y at 50% of X_max). Use this worker when you need to extract a response value at a relative position along the X axis rather than an absolute X coordinate.

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

Classification: **process**.

Tagged: ``curve_lookup``, ``interpolation``, ``lookup``, ``percentage``, ``transformations``, ``xmaxp``.

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 X-Y curve (vector) on which the lookup will be performed; must contain at least one data point with a defined X maximum.
   * - x_percentage
     - x_percentage
     - float
     - 0
     - 
     - Percentage (0–100) of the curve's maximum X value at which to evaluate Y; defaults to 0 (i.e., Y at X = 0% of X_max).

Outputs
-------

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

   * - Label
     - ID
     - Type
     - Description
   * - curve_lookup_xmaxp_output_1
     - curve_lookup_xmaxp_output_1
     - scalar
     - Scalar Y value interpolated from the curve at the X coordinate corresponding to the specified percentage of X_max.

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

.. raw:: html

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   Auto-generated from <code>transformation</code> schema. Worker id: <code>curve_lookup_xmaxp</code>. Schema hash: <code>c0c7933c65dd</code>. Hand-curated docs in <code>workerexamples/</code> override this page when present.
   </p>