.. _auto_dataset_scale_column:

*DATASET SCALE COLUMN*
======================

Multiplies every value in a chosen dataset column by a numeric scale factor, returning the modified dataset. Use this worker whenever a single column needs unit conversion, normalization, or any constant-factor rescaling within a workflow.

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

Classification: **process**.

Tagged: ``column_scaling``, ``dataset_transform``, ``multiplier``, ``normalization``, ``scale_column``, ``unit_conversion``.

Inputs
------

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

   * - Label
     - ID
     - Type
     - Default
     - Required
     - Description
   * - Choose Dataset
     - dataset_1
     - dataset
     - —
     - 
     - Input dataset containing the column to be scaled; accepts any tabular dataset available in the workflow — leave unconnected only if the worker is being configured offline.
   * - Choose Column
     - col_to_scale
     - scalar
     - —
     - 
     - Name of the column whose numeric values will be multiplied by the scale factor; the pick-list is populated dynamically from dataset_1.
   * - Scale Factor
     - scale_factor
     - text
     - 1
     - 
     - Dimensionless numeric multiplier applied to every value in the selected column (default 1, i.e. no change); provide a float or integer, e.g. 0.001 to convert mm → m.

Outputs
-------

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

   * - Label
     - ID
     - Type
     - Description
   * - Dataset with Scaled Column
     - dataset_scale_colmn_output_1
     - dataset
     - Copy of the input dataset with the selected column values replaced by their scaled equivalents; all other columns are unchanged.

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

- data.dataset.transform
- data.units

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

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

.. raw:: html

   <hr style="margin-top:2em">
   <p style="font-size:11px;color:#888">
   Auto-generated from <code>transformation</code> schema. Worker id: <code>dataset_scale_column</code>. Schema hash: <code>f992c94a962b</code>. Hand-curated docs in <code>workerexamples/</code> override this page when present.
   </p>