Spatial data modelling
======================

.. raw:: html

    <iframe src="https://docs.google.com/presentation/d/e/2PACX-1vQi-bP-ko31ai9adAcjBcO1FTjflju9k3mKtGec_u_51ulPhG0AsjhnROAflzKsew/pubembed?start=false&loop=false&delayms=3000" frameborder="0" width="960" height="569" allowfullscreen="true" mozallowfullscreen="true" webkitallowfullscreen="true"></iframe>