.. _auto_dataset_create_empty:

*DATASET CREATE EMPTY*
======================

Creates a blank dataset with a specified number of rows and columns, filling every cell with a chosen initial value. Use this worker to scaffold an empty tabular structure before populating it downstream in a workflow.

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

Classification: **process**.

Tagged: ``blank``, ``create_empty``, ``dataset``, ``initialize``, ``scaffold``, ``tabular``.

Inputs
------

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

   * - Label
     - ID
     - Type
     - Default
     - Required
     - Description
   * - Number Of Rows
     - num_rows
     - scalar
     - —
     - 
     - Integer number of rows to create in the empty dataset; leave unset to produce a zero-row (header-only) structure.
   * - Number Of Columns
     - num_cols
     - scalar
     - —
     - 
     - Integer number of columns to create; leave unset to produce a dataset with no columns.
   * - Col Prefix
     - col_prefix
     - scalar
     - col_
     - 
     - String prefix used to auto-name each column (e.g. default 'col_' yields col_0, col_1, …); ignored when column names are supplied via CSV input.
   * - Initial Value
     - initial_value
     - scalar
     - 0
     - 
     - Scalar value (numeric or string) used to fill every cell in the dataset; defaults to 0.

Outputs
-------

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

   * - Label
     - ID
     - Type
     - Description
   * - Dataset
     - dataset
     - dataset
     - Newly created empty dataset with the requested dimensions, auto-named columns, and every cell set to the specified initial value.

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

- data.dataset.transform

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

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

.. 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_create_empty</code>. Schema hash: <code>f945df2537e4</code>. Hand-curated docs in <code>workerexamples/</code> override this page when present.
   </p>