::::{grid} auto :::{grid-item-card} :class-card: sd-text-center sd-rounded-circle :link: https://giscience.github.io/gis-training-resource-center/english/content/en/intro.html {octicon}`home-fill;1.5em;sd-text-danger` ::: :::: # Exercise 5: The world ## Characteristics of the exercise :::{card} :class-card: sd-border-1 sd-shadow-none __Aim of the exercise:__ ^^^ This exercise will help you to get to know the interface of QGIS a bit better. Furthermore, you will load your first data in QGIS and gain some hands-on experience with the layer concept and learn how to reproject layers. ::: ::::{grid} 2 :::{grid-item-card} __Type of trainings exercise:__ ^^^ - This exercise can be used in online and presence training. - It can be done as a follow-along exercise or individually as a self-study. ::: :::{grid-item-card} __Competences covered in this exercise:__ ^^^ - Creating and saving a new QGIS project - Importing vector data (`.shp` and `.gpkg`) as well as tabular data (`.txt`) - Understanding the layer concept - Navigating the QGIS interface and map canvas ::: :::: ::::{grid} 2 :::{grid-item-card} __Estimated time demand for the exercise__ ^^^ - The exercise takes around 30 minutes to complete, depending on the number of participants and trainers. ::: :::{grid-item-card} __Relevant Wiki Articles__ ^^^ * [QGIS Interface](https://giscience.github.io/gis-training-resource-center/english/content/en/Wiki/en_qgis_interface_wiki.html) * [Types of Geodata](https://giscience.github.io/gis-training-resource-center/english/content/en/Wiki/en_qgis_geodata_types_wiki.html) * [Geodata Import in QGIS](https://giscience.github.io/gis-training-resource-center/english/content/en/Wiki/en_qgis_import_geodata_wiki.html) * [Layer Concept](https://giscience.github.io/gis-training-resource-center/english/content/en/Wiki/en_qgis_layer_concept_wiki.html) ::: :::: ## Instructions for the trainers :::{dropdown} __Trainers Corner__ ### Prepare the training - Take the time to familiarise yourself with the exercise and the provided material. - Prepare a white-board. It can be either a physical whiteboard, a flip-chart, or a digital whiteboard (e.g. Miro board) where the participants can add their findings and questions. - Before starting the exercise, make sure everybody has installed QGIS and has downloaded __and unzipped__ the data folder. - Check out [How to do trainings?](https://giscience.github.io/gis-training-resource-center/english/content/en/Trainers_corner/en_how_to_training.html#how-to-do-trainings) for some general tips on training conduction ### Conduct the training __Introduction:__ - Introduce the idea and aim of the exercise. - Provide the download link and make sure everybody has unzipped the folder before beginning the tasks. __Follow-along:__ - Show and explain each step yourself at least twice and slow enough so everybody can see what you are doing, and follow along in their own QGIS-project. - Make sure that everybody is following along and doing the steps themselves by periodically asking if anybody needs help or if everybody is still following. - Be open and patient to every question or problem that might come up. Your participants are essentially multitasking by paying attention to your instructions and orienting themselves in their own QGIS-project. __Wrap up:__ - Leave time for any issues or questions concerning the tasks at the end of the exercise. - Leave some time for open questions. ::: ## Available Data :::{card} :class-card: sd-text-center :link: https://nexus.heigit.org/repository/gis-training-resource-center/Module_2/Module_2_Exercise_5_The_World.zip __Download all datasets [here](https://nexus.heigit.org/repository/gis-training-resource-center/Module_2/Module_2_Exercise_5_The_World.zip), save the folder on your computer and unzip the file.__ ::: The folder is called “Module_2_Exercise_5_The_World" and contains the whole [standard folder structure](../Wiki/en_qgis_projects_folder_structure_wiki.md#standard-folder-structure) with all data in the input folder and the additional documentation in the documentation folder. - [World Countries (Generalized)](https://hub.arcgis.com/datasets/2b93b06dc0dc4e809d3c8db5cb96ba69_0/explore) (Polygon/Shapefile) - [Significant Earthquake Dataset](https://www.ncei.noaa.gov/access/metadata/landing-page/bin/iso?id=gov.noaa.ngdc.mgg.hazards:G012153) (CSV) - [Global Power Plant Dataset](https://datasets.wri.org/dataset/globalpowerplantdatabase) (Points/GeoPackage) ## Tasks ::::{margin} :::{tip} Make sure to __unzip__ the exercise folder before beginning the tasks. Otherwise, you will not be able to import the datasets into QGIS. ::: :::: 1. Open QGIS and create a [new project](../Wiki/en_qgis_projects_folder_structure_wiki.md#step-by-step-setting-up-a-new-qgis-project-from-scratch) by clicking on `Project` → `New` 2. Once the project is created save the project in the `/Project`-subfolder in the `/Module_2_Exercise_5_The_World`/. In the top bar, click on `Project` → `Save as` and navigate to the folder. Name the project “Module_2_Ex_5_The_World”. 3. Load the shape file `World_countries_generalized.shp` into your project by drag and drop ([Wiki Video](../Wiki/en_qgis_import_geodata_wiki.md#open-vector-data-via-drag-and-drop)). Or click on `Layer` → `Add Layer` → `Add Vector Layer`. Click on the three points ![](../../../fig/Three_points.png) and navigate to "World_countries__generalized". Select the file and click `Open`. Back in QGIS click `Add` ([Wiki Video](../Wiki/en_qgis_import_geodata_wiki.md#open-vector-data-via-layer-tab)). :::{Attention} With both methods, you need to select the file with the ending `.shp`! A [shapefile consists of several files](https://giscience.github.io/gis-training-resource-center/english/content/en/Module_2/en_qgis_geodata_concept.html#shapefile-structure) that are referring to each other. The file that holds the geometry information is the file ending with `.shp`. ::: 4. Load the GeoPackage file `global_power_plant_database_nuclear.gpkg` into the QGIS project. You can use one of the methods used in the previous step: Either drag and drop ([Wiki Video](https://giscience.github.io/gis-training-resource-center/english/content/en/Wiki/en_qgis_import_geodata_wiki.html#open-vector-data-via-drag-and-drop)) the file or click on `Layer` → `Add Layer` → `Add Vector Layer`. Click on the three points ![](../../../fig/Three_points.png) and navigate to `/data/input/`. Select the file and click `Open`. Back in QGIS click `Add`([Wiki Video](https://giscience.github.io/gis-training-resource-center/english/content/en/Wiki/en_qgis_import_geodata_wiki.html#open-vector-data-via-layer-tab)). :::{Note} GeoPackage files can contain multiple files, and even whole QGIS projects. When you load such a file in QGIS, a window will appear in which you have to select the files you want to load in your QGIS project. ::: 5. Next, we want to load the file `Significant_earthquake_data.txt` into QGIS. Since this is vector data in text format, we need to follow specific steps ([Wiki Video](https://giscience.github.io/gis-training-resource-center/english/content/en/Wiki/en_qgis_import_geodata_wiki.html#open-csv-data-in-qgis)). * Click on `Layer` → `Add Layer` → `Add Delimited text Layer`. Click on the three points ![](../../../fig/Three_points.png) and navigate to `Significant_earthquake_data.txt` in the `data/input/`-subfolder. Select the file and click `Open`. * In the window "Data Source manager| Delimited Text" in QGIS open the dropdown menu `File Format` and check `Custom delimiter` and `Tab`. * Open the dropdown menu `Geometry definition`. Make sure the option `Point coordinates` is checked. Furthermore, select for `X field` “LONGITUDE” and for `Y field` “LATITUDE”. * Select the coordinate reference system (CRS) "EPSG:4326-WGS 84". * Click `Add`. :::{Note} When loading vector data in text format like .csv or .txt in QGIS, these data has to have latitude and longitude columns. * `X field` =“LONGITUDE” * `Y field` = “LATITUDE”. ::: :::{figure} ../../../fig/en_ex_The_world_add_text_layer_import.png --- width: 600px name: ex5_import_text_layer align: center --- ::: 6. In the layer panel on the left, arrange the three layers in a practical order. Remember the [Layer Concept](../Wiki/en_qgis_layer_concept_wiki.md). The countries-layer should sit below the earthquake and power plant layers. :::{figure} ../../../fig/Module_2/en_m2_ex_5_interface_explanation.png --- name: en_m2_ex_5_interface_explanation width: 750 px --- ::: ::::{margin} :::{tip} You can also move the map by clicking on the map canvas and holding Space. This will automatically activate the hand-tool while pressing the space bar. Scrolling with your mouse(pad) also lets you zoom in and out in the map canvas. Holding Ctrl on windows, or Cmd on MacOS, allows you to zoom in smaller steps. ::: :::: 7. Interact with the map and explore the data sets. Use the zoom tool and move the map. Where can you find a lot of earthquakes and where are most of the power plants located? ::::{margin} :::{Tip} If you see `*` before the name of your project on the top left corner of QGIS this means there are unsaved changes in your project. Save your progress! ::: :::: 8. Save your project by clicking on the ![](../../../fig/mActionFileSave.png) or use the hotkey combination Ctrl + S. 9. Your results should look something like this: :::{figure} ../../../fig/en_ex_The_world_result.png --- width: 600px name: the_world_result align: center --- :::