.. DO NOT EDIT.
.. THIS FILE WAS AUTOMATICALLY GENERATED BY SPHINX-GALLERY.
.. TO MAKE CHANGES, EDIT THE SOURCE PYTHON FILE:
.. "auto_examples/G2/bootstrap.py"
.. LINE NUMBERS ARE GIVEN BELOW.

.. only:: html

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

        :ref:`Go to the end <sphx_glr_download_auto_examples_G2_bootstrap.py>`
        to download the full example code.

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

.. _sphx_glr_auto_examples_G2_bootstrap.py:


==================
Bootstraping error
==================

Simple example of bootstrap on G2 dataset from the N2CLS GTO.

.. GENERATED FROM PYTHON SOURCE LINES 11-12

First import the :class:`nikamap.analysis.Bootstrap` class

.. GENERATED FROM PYTHON SOURCE LINES 12-16

.. code-block:: Python


    from pathlib import Path
    from nikamap import Bootstrap


.. GENERATED FROM PYTHON SOURCE LINES 17-18

This define the root directory where all the data ...

.. GENERATED FROM PYTHON SOURCE LINES 18-21

.. code-block:: Python


    DATA_DIR = Path("/data/NIKA/Reduced/G2_COMMON_MODE_ONE_BLOCK/v_1")


.. GENERATED FROM PYTHON SOURCE LINES 22-23

can be retrieved using a simple regular expression

.. GENERATED FROM PYTHON SOURCE LINES 23-28

.. code-block:: Python


    filenames = list(DATA_DIR.glob("*/map.fits"))
    filenames



.. GENERATED FROM PYTHON SOURCE LINES 29-33

Generate a bootstrap dataset for all the maps.

.. note:: At the moment, this is very memory demanding as we use
          ```map_size * (len(filenames) + n_bootstrap))```

.. GENERATED FROM PYTHON SOURCE LINES 33-38

.. code-block:: Python



    nm = Bootstrap(filenames, n_bootstrap=200, ipython_widget=True)



.. GENERATED FROM PYTHON SOURCE LINES 39-42

In the resulting :class:`nikamap.NikaMap` object, the uncertainty as been computed using the bootstrap technique.

.. warning:: The resulting uncertainty map could still be biased, see https://gitlab.lam.fr/N2CLS/NikaMap/issues/4

.. GENERATED FROM PYTHON SOURCE LINES 42-44

.. code-block:: Python


    _ = nm.plot_SNR(cbar=True)


.. _sphx_glr_download_auto_examples_G2_bootstrap.py:

.. only:: html

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

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

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

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

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

    .. container:: sphx-glr-download sphx-glr-download-zip

      :download:`Download zipped: bootstrap.zip <bootstrap.zip>`


.. only:: html

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

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