.. _auto_string_format_csv:

*FORMAT A CSV STRING OF NUMBERS*
================================

Formats a comma-separated list of numeric values into strings using a printf-style format specifier. Use this worker when you need to control the display precision or width of numbers before passing them downstream as formatted text.

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

Classification: **process**.

Tagged: ``csv``, ``number_formatting``, ``printf``, ``scalar``, ``sprintf``, ``string_format``.

Inputs
------

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

   * - Label
     - ID
     - Type
     - Default
     - Required
     - Description
   * - Value To Be Formatted
     - values
     - scalar
     - —
     - ✓
     - Scalar numeric value (or comma-separated list of values) to be formatted; required at runtime even though marked optional in the schema.
   * - Format
     - format
     - string
     - %10.4f
     - 
     - Printf-style format specifier string (e.g. '%10.4f') controlling field width and decimal precision; defaults to '%10.4f', which produces a 10-character-wide value with 4 decimal places.

Outputs
-------

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

   * - Label
     - ID
     - Type
     - Description
   * - string_sprintf_output_1
     - string_sprintf_output_1
     - scalar
     - Whitespace-trimmed, formatted string representation of the input value(s) produced by applying the printf format specifier to each element.

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

- data.curve.transform
- data.io.csv

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

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

.. raw:: html

   <hr style="margin-top:2em">
   <p style="font-size:11px;color:#888">
   Auto-generated from <code>transformation</code> schema. Worker id: <code>string_format_csv</code>. Schema hash: <code>be37b9bf9c07</code>. Hand-curated docs in <code>workerexamples/</code> override this page when present.
   </p>