Lesson 7 Overview
=================

.. figure:: img/L7-01-overview-01-pyqgis.svg
    :width: 500 px

In this lesson we will take a quick tour on **how to use Python in QGIS**:

1. :doc:`Introduction to PyQGIS <pyqgis>`
2. :doc:`Creating QGIS plugins <pyqgis#creating-qgis-plugins>`
3. :doc:`Additional PyQGIS functions <additional_pyqgis_functions>`

*Credits to Tatu Leppämäki for compiling these materials!*

Learning objectives
-------------------

The aim of this lesson is to get started with using Python in QGIS. You will learn to run code from
QGIS Python console, and learn how to create a simple QGIS plugin that applies Python functions.


.. admonition:: Note

    There is no exercise in week 6! You can now continue to the **Final Assignment**. Also, please find additional
    materials related to **raster data processing** on these course pages.


.. admonition:: Older course materials related to Desktop GIS software

    - `AutoGIS course materials from 2016 <https://automating-gis-processes.github.io/2016/Lesson6-overview.html>`_ on how to use the `arcpy <http://desktop.arcgis.com/en/arcmap/10.3/analyze/arcpy/what-is-arcpy-.htm>`_  module for automating GIS processes.
    - `AutoGIS course materials from 2018 on how to run python scripts in the QGIS processing toolbox <https://automating-gis-processes.github.io/site/2018/lessons/L7/pyqgis.html>`__



Lecture videos
--------------

.. admonition:: Lesson 7 - Python in QGIS; building a simple QGIS plugin

    .. raw:: html

        <iframe width="560" height="315" src="https://www.youtube.com/embed/-ZlRXQYqcr0" frameborder="0" allowfullscreen></iframe>
        <p>Vuokko Heikinheimo & Tatu Leppämäki, University of Helsinki <a href="https://www.youtube.com/channel/UCGrJqJjVHGDV5l0XijSAN1Q/playlists">@ AutoGIS channel on Youtube</a>.</p>

    **Contents:**

        - General intro for lesson 7 0:00
        - Python in QGIS intro 4:10
        - Opening a WFS layer in QGIS 7:00
        - Changing the crs of the WFS layer 08:35
        - Python console in QGIS 10:18
        - Basic python commands in QGIS 11:20
        - Python script files in QGIS 22:10
        - Installing plugins for creating plugins 27:00
        - QGIS plugin builder 30:35
        - Compile required files using a batch file 37:50
        - Restart QGIS and activate plugin 43:50
        - Add a Python function to the plugin 46:35
        - Design the graphical user interface of the plugin using qt designer 50:30
        - Connect the Python function and the user interface 56:30
        - Reload the plugin 1:00:35
        - Run the plugin 1:01:05
        - Summary  1:02:00
        - Additional resources 1:03:10
        - Additional PyQGIS functions 1:04:17
        - Example of a more complicated plugin (GeoCubes):  1:06:30

.. admonition:: Lesson 7 - Final assignment instructions

    .. raw:: html

        <iframe width="560" height="315" src="https://www.youtube.com/embed/8CV0tIRVY3I" frameborder="0" allowfullscreen></iframe>
        <p>Vuokko Heikinheimo & Tatu Leppämäki, University of Helsinki <a href="https://www.youtube.com/channel/UCGrJqJjVHGDV5l0XijSAN1Q/playlists">@ AutoGIS channel on Youtube</a>.</p>

    **Contents:**

        - Example student project 0:00
        - Final assignment instructions 04:30
        - Additional resources 23:30
        - Final assignment repository 25:30
        - Extra exercises 26:30