.. DO NOT EDIT.
.. THIS FILE WAS AUTOMATICALLY GENERATED BY SPHINX-GALLERY.
.. TO MAKE CHANGES, EDIT THE SOURCE PYTHON FILE:
.. "glr_examples/analysis/plot_decision_regions.py"
.. LINE NUMBERS ARE GIVEN BELOW.

.. only:: html

    .. note::
        :class: sphx-glr-download-link-note

        :ref:`Go to the end <sphx_glr_download_glr_examples_analysis_plot_decision_regions.py>`
        to download the full example code or to run this example in your browser via Binder

.. rst-class:: sphx-glr-example-title

.. _sphx_glr_glr_examples_analysis_plot_decision_regions.py:


=================================================
Plot decision regions 
=================================================

displays the decision region for the training data reduced to 
two principal component axes. 

.. GENERATED FROM PYTHON SOURCE LINES 10-13

.. code-block:: Python

    # Author: L.Kouadio 
    # Licence: BSD-3-clause








.. GENERATED FROM PYTHON SOURCE LINES 14-17

Fetch the test data and do
select the numerical features and 
impute the missing values 

.. GENERATED FROM PYTHON SOURCE LINES 17-30

.. code-block:: Python


    from watex.datasets import fetch_data 
    from watex.exlib.sklearn import SimpleImputer, LogisticRegression  
    from watex.analysis.decomposition import decision_region 
    from watex.utils import selectfeatures
    data= fetch_data("bagoue original").get('data=dfy1') # encoded flow categories 
    y = data.flow ; X= data.drop(columns='flow') 
    # select the numerical features 
    X =selectfeatures(X, include ='number')
    # imputed the missing data 
    X = SimpleImputer().fit_transform(X)
    lr_clf = LogisticRegression(multi_class ='ovr', random_state =1, solver ='lbfgs') 
    _=decision_region(X, y, clf=lr_clf, split = True, view ='Xt') # test set view



.. image-sg:: /glr_examples/analysis/images/sphx_glr_plot_decision_regions_001.png
   :alt: plot decision regions
   :srcset: /glr_examples/analysis/images/sphx_glr_plot_decision_regions_001.png
   :class: sphx-glr-single-img


.. rst-class:: sphx-glr-script-out

 .. code-block:: none

    /home/docs/checkouts/readthedocs.org/user_builds/watex/checkouts/0.3.2/watex/analysis/decomposition.py:256: UserWarning:

    You passed a edgecolor/edgecolors ('black') for an unfilled marker ('x').  Matplotlib is ignoring the edgecolor in favor of the facecolor.  This behavior may change in the future.






.. rst-class:: sphx-glr-timing

   **Total running time of the script:** (0 minutes 0.275 seconds)


.. _sphx_glr_download_glr_examples_analysis_plot_decision_regions.py:

.. only:: html

  .. container:: sphx-glr-footer sphx-glr-footer-example

    .. container:: binder-badge

      .. image:: images/binder_badge_logo.svg
        :target: https://mybinder.org/v2/gh/watex/watex/0.3.X?urlpath=lab/tree/notebooks/glr_examples/analysis/plot_decision_regions.ipynb
        :alt: Launch binder
        :width: 150 px

    .. container:: sphx-glr-download sphx-glr-download-jupyter

      :download:`Download Jupyter notebook: plot_decision_regions.ipynb <plot_decision_regions.ipynb>`

    .. container:: sphx-glr-download sphx-glr-download-python

      :download:`Download Python source code: plot_decision_regions.py <plot_decision_regions.py>`


.. only:: html

 .. rst-class:: sphx-glr-signature

    `Gallery generated by Sphinx-Gallery <https://sphinx-gallery.github.io>`_