.. _auto_curve_scalar_subtract:

*SUBTRACT A VALUE FROM ALL POINTS OF A CURVE*
=============================================

Subtracts a constant scalar value from every point of a curve (default axis: Y). Use this worker to apply a uniform offset removal or baseline shift to any time-history or XY curve.

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

Classification: **process**.

Tagged: ``baseline_shift``, ``curve``, ``offset``, ``scalar``, ``scalar_subtract``, ``transform``.

Inputs
------

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

   * - Label
     - ID
     - Type
     - Default
     - Required
     - Description
   * - Curve To Be Subtracted
     - curvetobesubtracted
     - vector
     - —
     - 
     - Input XY curve (vector) whose values will be reduced by the scalar; accepts any time-history or XY curve — leave unconnected to test with a constant only.
   * - X Scale
     - value
     - float
     - 0.0
     - 
     - Scalar float to subtract from each Y-axis point of the curve (default 0.0 = no change); provide a non-zero value to apply a uniform baseline or offset correction.

Outputs
-------

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

   * - Label
     - ID
     - Type
     - Description
   * - curve_scalar_subtract_output_1
     - curve_scalar_subtract_output_1
     - vector
     - Resulting curve (vector) after the scalar has been subtracted from every point; same X values as the input, Y values shifted downward by the specified amount.

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

.. 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_scalar_subtract</code>. Schema hash: <code>bd6d92da6994</code>. Hand-curated docs in <code>workerexamples/</code> override this page when present.
   </p>