.. _auto_curve_slope:

*COMPUTE THE SLOPE OF THE CURVE*
================================

Computes the slope of a curve using a specified aggregation strategy (first, max, min, avg, last, or initial-to-y-max). Use this worker whenever a scalar slope value needs to be extracted from a time-history or XY curve for downstream KPI evaluation or comparison.

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

Classification: **process**.

Tagged: ``curve``, ``derivative``, ``scalar``, ``slope``, ``transformation``.

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/time-history curve from which the slope will be computed; accepts any standard d3VIEW curve vector.
   * - Slope Type
     - smoothtype
     - string
     - first
     - 
     - Aggregation strategy used to reduce the point-wise slope to a single scalar: 'first' (slope at the first point), 'max' (maximum slope), 'min' (minimum slope), 'avg' (average slope), 'last' (slope at the last point), or 'initialtoymax' (slope from the curve origin to the y-maximum); defaults to 'first'.

Outputs
-------

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

   * - Label
     - ID
     - Type
     - Description
   * - curve_slope_output_1
     - curve_slope_output_1
     - scalar
     - Scalar slope value (Δy/Δx, unitless unless the input curve carries units) computed from the input curve according to the chosen slope type.

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

.. 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_slope</code>. Schema hash: <code>17030af3961a</code>. Hand-curated docs in <code>workerexamples/</code> override this page when present.
   </p>