Lesson 4 overview
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During this lesson we will learn a few really useful and commonly used GIS functionalities using Geopandas and PySAL.

1. :doc:`Data classification and re-classification <reclassify>`


Learning goals
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After this lesson's lesson you should be able to:

 - learn about different classification schemes
 - reclassify data based on different criteria (custom or common classifiers).
 - merge data, i.e. join spatial and non-spatial datasets together, based on some common identifier.


Sources
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Following materials are partly based on documentation of `Geopandas <http://geopandas.org/>`_, `Pandas <http://pandas.pydata.org/>`_ and
`pysal <http://pysal.org/pysal/>`_.

The lesson reuses materials from Dani Arribas-Bel from the University of Liverpool, under CC BY-SA 3.0 from `Geographic Data Science in Python with PySAL <https://darribas.org/materials.html>`_.