.. _book_fig_chapter6_fig_great_wall_KDE:


Great Wall KDE
--------------
Figure 6.3

Kernel density estimation for galaxies within the SDSS "Great Wall." The
top-left panel shows points that are galaxies, projected by their spatial
locations (right ascension and distance determined from redshift measurement)
onto the equatorial plane (declination ~ 0 degrees). The remaining panels show
estimates of the density of these points using kernel density estimation with
a Gaussian kernel (upper right), a top-hat kernel (lower left), and an
exponential kernel (lower right). Compare also to figure 6.4.



.. image:: ../images/chapter6/fig_great_wall_KDE_1.png
    :scale: 100
    :align: center


.. raw:: html
    
    <div class="toggle_trigger"><a href="#">

**Code output:**

.. raw:: html

    </a></div>
    <div class="toggle_container">

.. literalinclude:: fig_great_wall_KDE.txt

.. raw:: html

    </div>
    <div class="toggle_trigger" id="start_open"><a href="#">

**Python source code:**

.. raw:: html

    </a></div>
    <div class="toggle_container">

.. literalinclude:: fig_great_wall_KDE.py
    :lines: 14-

.. raw:: html

    </div>
    <div align="right">

:download:`[download source: fig_great_wall_KDE.py] <fig_great_wall_KDE.py>`

.. raw:: html
    
    </div>