.. _auto_curve_lookup:

*LOOK UP KEY VALUES FROM A CURVE*
=================================

Extracts a single scalar key value from a curve using a configurable lookup operation (e.g. Ymax, Xmin, integral, average). Use this worker whenever a downstream step requires a scalar KPI derived from a time-history or XY curve.

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

Classification: **process**.

Tagged: ``curve``, ``integral``, ``kpi``, ``lookup``, ``scalar``, ``statistics``, ``time-history``, ``xy-curve``.

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 XY curve (vector/time-history) from which the scalar value will be extracted; must be a valid d3VIEW curve object.
   * - Lookuptype
     - lookuptype
     - string
     - ymax
     - 
     - Lookup operation to apply to the curve (e.g. 'ymax' for maximum Y value, 'integral' for area under curve, 'xatymax' for X coordinate at Y maximum); defaults to 'ymax'.
   * - Format
     - format
     - string
     - %10s
     - 
     - Format of output data

Outputs
-------

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

   * - Label
     - ID
     - Type
     - Description
   * - curve_lookup_output_1
     - curve_lookup_output_1
     - scalar
     - Scalar result of the selected lookup operation applied to the input curve, optionally formatted via a printf-style format string.

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

- data.curve.transform
- data.statistics

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

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

.. raw:: html

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   Auto-generated from <code>transformation</code> schema. Worker id: <code>curve_lookup</code>. Schema hash: <code>eddb941a5f28</code>. Hand-curated docs in <code>workerexamples/</code> override this page when present.
   </p>