.. _auto_curve_lookup_xatyabsmax:

* COMPUTE THE VALUE OF X FOR A GIVEN Y VALUE*
=============================================

Finds the X value corresponding to the absolute maximum Y value on a given curve. Use this worker when you need to identify the time (or other X-axis quantity) at which a signal reaches its peak absolute magnitude.

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

Classification: **process**.

Tagged: ``absolute_max``, ``curve_lookup``, ``lookup``, ``peak``, ``signal_peak``, ``time_of_peak``, ``x_at_y``, ``xatyabsmax``.

Inputs
------

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

   * - Label
     - ID
     - Type
     - Default
     - Required
     - Description
   * - Curve 1
     - curve1
     - vector
     - —
     - 
     - The input curve (X-Y vector pair) from which the X value at absolute maximum Y will be extracted; accepts any d3VIEW curve object — leave unconnected only if the worker is used in a chained transformation context where the curve is passed implicitly.

Outputs
-------

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

   * - Label
     - ID
     - Type
     - Description
   * - Lookup Value
     - curve_lookup_xvalueat_output_1
     - scalar
     - Scalar X value (inherits the X-axis units of the input curve, e.g. seconds) corresponding to the point where the absolute maximum Y value occurs.

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

- data.curve.transform
- data.signal_processing

Runnable example
----------------

A runnable example is registered for this worker. Open the example workflow on the d3VIEW canvas: `/api/workflow/example?id=curve_lookup_xatyabsmax <https://www.d3view.com/api/workflow/example?id=curve_lookup_xatyabsmax>`_

.. raw:: html

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   Auto-generated from <code>transformation</code> schema. Worker id: <code>curve_lookup_xatyabsmax</code>. Schema hash: <code>2464a2e1a778</code>. Hand-curated docs in <code>workerexamples/</code> override this page when present.
   </p>