In this course you will learn how to use QGIS to work with data from the PhenoloGIT project.


Module 1.- Dowloading and installing QGIS

  • Instalación el programa QGIS
  1. Go to QGIS wev
  2. Press dowloading now
  3. Choose operating system
  4. Choose Version 3.*
  • Descarga del proyecto PhenoloGIT para QGIS
  1. Go to PhenoloGIT web
  2. Donwnload file .zip
  3. Unzip PhenoloGIT files

In this module we will download the QGIS software in its version 3. * to install it on your computer. We will also download the PhenoloGIT project that allows us to access the cartography with the project information to work from QGIS.

Module 2.- Configuring QGIS Project

  • Toolbars.
  1. Project toolbar
    Opening PhenoloGIT QGIS Project
  2. Map navigation toolbar
    Navigation options with QGIS tolos
  3. Attributes toolbar
    Accesing Information from a table
  • Plugins
  1. Instaling a plugin in QGIS. Openlayers
  2. Adding Google Maps Layer
  3. Adding Open Street Map Layer

In this module we will first explore QGIS toolbars to manage spatial data. We will review how to use the tools to manage projects, navigate the map and access the information of our spatial data.
Then, we will learn how to install plugins and expand the QGIS functionalities. Specifically, we will install the Openlayers plugin, which will allow us to add reference maps to the PhenoloGIT project, such as the Google and Open Street Map services.

Module 3.- Symbolizing PhenoloGIT data

  • Creating a copy o PhenoloGIT project
  1. Creating your own project
  2. Duplicating a layer and changing its name
  • Layer styling – single symbols
  1. Changing general properties of symbols: Color, Size, Symbol icon
  2. Changing properties of a simple marker
  • Saving symbolizations as styles

The GIS does not store the data with a concrete symbolization, but we can configure it as we want; being able to vary the symbology, colors or sizes of the elements of the layers depending on how we want to represent them at each moment. QGIS uses the styles to save the different symbolizations that we create, and to alternate their use and therefore the way in which we represent our data.
To work with the styles in the module, we will first make a copy of the original phenologit-qgis.qgs project and thus not modify the original project. This allows us to have a copy and be able to create different projects at specific times.

Module 4.- Symbolizing PhenoloGIT data – Classification

  • Nominal classification
  1. Creating a categorized classification: Season
  2. Creating a categorized classification: State
  3. Creating a categorized classification: Specie
  • Ordinal Classification
  1. Creating a graduated classification: Temperature
  2. Creating a graduated classification: Precipitation

The attributes of our information layers can be of two types: qualitative or quantitative variables. The qualitative or nominal variables are those that allow us to identify categories, classes or types. When we make a qualitative classification or what in QGIS is known as categorized, the program identifies all the unique values of a variable and groups those elements with the same symbology. As an example we will classify the observations according to the season of the year, the weather and the species of each observation.
The quantitative variables are those that have a numerical value and allow us to sort the data and classify them according to ranges of values. In QGIS this classification is known as graduated and we will use it to represent the observations based on humidity and temperature.

Módulo 5.- Asking questions to the data

With QGIS we can make queries about the attributes of the geographical elements, in our case the observations. The questions about the data must be created with a specific syntax, in which through a series of operators, relational or logical, we will obtain a result of the elements that meet the established conditions.
The created queries can be used to select a series of observations, or to establish filters on the observation layer. The results of our consultations can be downloaded to a copy in a file on our computer.
In this module we will execute different examples of queries and filtering of observations, both with relational and logical operators. We will also make the download of observations to the computer in local to be able to have a copy of the queries that we made.
In the PhenoloGIT QGIS project all the observations and schools that are stored in the system are loaded at the moment we start working. While we can continue to work with the data of that connection, we can make a download to our computer of the queries made and work with that data without being connected to the network.
This option allows us to make changes to the data as we will see later, in addition to being able to copy this data to other locations on our computer, or provide it to another user. We can therefore create different versions of the observations.

Módulo 6.- Creating maps: the print designer

With GIS we can create and analyze information, but many times we will need to present the results of this work in the form of a map. In this module, we will see how we can create a print designer to create our own maps with the Phenologit project data, and be able to export them in PDF format, or as an image.

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