.. _auto_curve_zone_values:

*COMPUTE ZONE VALUES BASED ON X-RANGES*
=======================================

Splits a curve into user-defined x-axis zones and computes a summary statistic (average, min, max, first, or last y-value) for each zone. Use this worker to extract scalar KPIs from specific time or spatial intervals of a curve.

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

Classification: **process**.

Tagged: ``aggregation``, ``average``, ``curve``, ``kpi``, ``max``, ``min``, ``time-interval``, ``x-range``.

Inputs
------

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

   * - Label
     - ID
     - Type
     - Default
     - Required
     - Description
   * - Curve To Use For Computing The Zone Calculations
     - curvetouseforcomputingthezonecalculations
     - vector
     - —
     - 
     - The input curve (x/y vector) on which zone calculations will be performed; must be provided as a d3VIEW curve object.
   * - Zones
     - zones
     - string
     - —
     - 
     - Colon-separated x-axis range pairs defining each zone (e.g. '0:10:20:30' for two zones [0–10] and [20–30]); leave blank to operate over the full curve extent.
   * - Calculation Type
     - calculation_type
     - integer
     - average
     - 
     - Aggregation function applied to y-values within each zone: 'average' (default), 'min', 'max', 'first', or 'last'.
   * - Names
     - zone_names
     - string
     - —
     - 
     - Optional comma-separated labels to assign to each zone in the output; defaults to the source curve name if not provided.

Outputs
-------

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

   * - Label
     - ID
     - Type
     - Description
   * - curve_zone_values_output_1
     - curve_zone_values_output_1
     - keyvalue
     - Key-value map of zone name → computed scalar result, one entry per defined zone, using the selected aggregation type.

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

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   Auto-generated from <code>transformation</code> schema. Worker id: <code>curve_zone_values</code>. Schema hash: <code>fecbd3d48090</code>. Hand-curated docs in <code>workerexamples/</code> override this page when present.
   </p>