.. _auto_dataset_extend_rows:

*DATASET EXTEND ROWS*
=====================

Extends a dataset by appending a specified number of new rows, each populated by repeating the last existing row. Use this worker to pad or extend time-series or tabular datasets when a fixed-length output is required.

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

Classification: **process**.

Tagged: ``dataset``, ``extend_rows``, ``process``, ``repeat_last_row``, ``row_padding``, ``tabular``.

Inputs
------

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

   * - Label
     - ID
     - Type
     - Default
     - Required
     - Description
   * - Dataset
     - dataset_1
     - dataset
     - —
     - 
     - The input dataset to be extended; each column's last value will be repeated for the added rows.
   * - Num Of Rows
     - num_rows
     - string
     - 0
     - 
     - Integer number of rows to append to the dataset by repeating the last row; defaults to 0 (no extension).

Outputs
-------

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

   * - Label
     - ID
     - Type
     - Description
   * - Extended Dataset
     - dataset_extend_1
     - dataset
     - The resulting dataset with the original rows followed by the specified number of duplicated last rows appended.

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

.. 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_extend_rows</code>. Schema hash: <code>f0be0ccb809f</code>. Hand-curated docs in <code>workerexamples/</code> override this page when present.
   </p>