.. DO NOT EDIT.
.. THIS FILE WAS AUTOMATICALLY GENERATED BY SPHINX-GALLERY.
.. TO MAKE CHANGES, EDIT THE SOURCE PYTHON FILE:
.. "glr_examples/view/plot_roc.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_view_plot_roc.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_view_plot_roc.py:


=================================================
Plot Receiving Operating Characteristic (ROC)
=================================================

visualizes the ROC classifier(s) performance. 

.. GENERATED FROM PYTHON SOURCE LINES 8-11

.. code-block:: Python

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








.. GENERATED FROM PYTHON SOURCE LINES 12-16

it can plot multiple classifiers at once. If multiple classifiers are 
given, each classifier must be a tuple of  
``( <name>, classifier>, <method>)``. Refer to 
:meth:`~watex.view.mlplot.EvalPlot.plotROC`

.. GENERATED FROM PYTHON SOURCE LINES 16-37

.. code-block:: Python


    # (1) Plot ROC for single classifier 
    # note that plot can be customize 

    from watex.exlib.sklearn import SGDClassifier, RandomForestClassifier
    from watex.datasets.dload import load_bagoue 
    from watex.utils import cattarget 
    from watex.view.mlplot import EvalPlot 
    X , y = load_bagoue(as_frame =True )
    sgd_clf = SGDClassifier(random_state= 42) # our estimator 
    b= EvalPlot(scale = True , encode_labels=True)
    b.lc='b'
    b.lw=7
    b.font_size =7. 
    b.fit_transform(X, y)
    # binarize the label b.y 
    ybin = cattarget(b.y, labels= 2 ) # can also use labels =[0, 1]
    b.y = ybin 
    # plot ROC 
    b.plotROC(sgd_clf , label =1) # class=1




.. image-sg:: /glr_examples/view/images/sphx_glr_plot_roc_001.png
   :alt: plot roc
   :srcset: /glr_examples/view/images/sphx_glr_plot_roc_001.png
   :class: sphx-glr-single-img


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

 .. code-block:: none


    EvalPlot(tname= None, objective= None, scale= True, ... , sns_height= 4.0, sns_aspect= 0.7, verbose= 0)



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(2)-> Plot ROC for multiple classifiers 
examples of RandomForest and SDG 

.. GENERATED FROM PYTHON SOURCE LINES 40-53

.. code-block:: Python


    b= EvalPlot(scale = True , encode_labels=True, 
                    lw =3., lc=(.9, 0, .8), font_size=7 )
    sgd_clf = SGDClassifier(random_state= 42)
    forest_clf =RandomForestClassifier(random_state=42)
    b.fit_transform(X, y)
    # binarize the label b.y 
    ybin = cattarget(b.y, labels= 2 ) # can also use labels =[0, 1]
    b.y = ybin 
    clfs =[('sgd', sgd_clf, "decision_function" ), 
            ('forest', forest_clf, "predict_proba")]
    b.plotROC (clfs =clfs , label =1 )




.. image-sg:: /glr_examples/view/images/sphx_glr_plot_roc_002.png
   :alt: plot roc
   :srcset: /glr_examples/view/images/sphx_glr_plot_roc_002.png
   :class: sphx-glr-single-img


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

 .. code-block:: none


    EvalPlot(tname= None, objective= None, scale= True, ... , sns_height= 4.0, sns_aspect= 0.7, verbose= 0)




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

   **Total running time of the script:** (0 minutes 2.222 seconds)


.. _sphx_glr_download_glr_examples_view_plot_roc.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/view/plot_roc.ipynb
        :alt: Launch binder
        :width: 150 px

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

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

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

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


.. only:: html

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

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