.. _fwflag_no_lower:
==========
--no_lower
==========
Switch
======

--no_lower

Description
===========

Preserves case when extracting n-gram/char-n-gram features, instead of lowercasing everything.

Argument and Default Value
==========================

No argument. Sets ``lowercaseonly`` to ``False``; default (flag absent) is ``True`` (``dlac.LOWERCASE_ONLY``).

Details
=======

Verified: with ``--no_lower``, features keep their original case (e.g. ``10AM``, ``128M`` show up as distinct features rather than being folded to lowercase), **and** the generated table name changes from ``feat$1gram$...`` to ``feat$1gramUp$...`` — the ``Up`` marks the table as case-preserved, so it never collides with the default lowercased table. Applies to :doc:`fwflag_add_ngrams`, :doc:`fwflag_add_ngrams_from_tokenized`, :doc:`fwflag_add_char_ngrams`, :doc:`fwflag_use_collocs`, and :doc:`fwflag_gzip_csv`.

Other Switches
==============

Optional Switches:

* :doc:`fwflag_add_ngrams`, :doc:`fwflag_add_char_ngrams`, :doc:`fwflag_use_collocs`, etc.

Example Commands
================

Using the packaged ``dla_tutorial`` dataset (see :doc:`../../tutorials/tut_dla`):

.. code-block:: bash

	dlatkInterface.py -d dla_tutorial -t msgs -c user_id --add_ngrams -n 1 --no_lower