• Screenshot from the QGIS website. Click here to visit.

[edit] FOREWORD

QGIS is a free and open source GIS software for beginners and experienced users.

• QGIS is open source and free to use, making it accessible to all users.
• The software has global contributions and support from various companies and individuals.

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1. 01:45 Introduction to QGIS and its Features
2. 05:15 Downloading and installing QGIS for different operating systems
3. 06:53 Introduction to QGIS interface and navigation
4. 10:17 Learn to manage projections and toolbar options in QGIS
5. 11:58 Customizable top toolbar and different menus
6. 15:22 Exporting spatial data in QGIS
7. 17:00 Adding layers to the map for data visualization
8. 19:57 Exploring different layers within NYC parks in QGIS
9. 21:35 Adding a base map and changing projection in QGIS
10. 24:37 Change projections for specific needs
11. 26:02 Exploring different projections in QGIS
12. 28:49 Styling maps based on categorical values
13. 30:24 Styling and customization options in QGIS mapping
14. 33:28 Adding latitude and longitude data to QGIS for visualization
15. 35:00 Convert text fields to numeric for proper visualization
16. 38:14 Understanding and cleaning data for better visualization
17. 39:40 Adjust symbol size for better visualization
18. 42:36 Customize labels and styling in QGIS
19. 44:08 Editing polygon layers in QGIS for accuracy
20. 47:07 Adding polygon shapes to QGIS for building structures
21. 48:39 Printing and customizing maps in QGIS
22. 51:39 Overview of QGIS plugins and tools
23. 53:18 Reproject and create buffers in QGIS
24. 56:24 Performing point count in polygons
25. 57:56 Introduction to raster data in QGIS
26. 1:00:57 Analyzing and manipulating raster data in QGIS
27. 1:02:23 Interpolating elevation data to create contoured layers
28. 1:05:13 QGIS offers a wide range of raster analytics and classification tools
29. 1:06:46 Creating and adding a new shapefile layer in QGIS
30. 1:09:52 Exporting map to web map in QGIS
31. 1:11:25 QGIS allows creation of fully functioning web maps for online sharing

01:45

QGIS offers various resources like training materials, user groups, and project involvement options for users.

The software has evolved over the years with multiple versions, plugins for extension, cross-platform compatibility, and open-source deployment capabilities.

05:15

Download the appropriate version for your operating system by clicking download and following the installation steps.

For Mac users, drag the downloaded file into the applications folder, overwrite the previous version if necessary, and proceed with the installation.

06:53

Explanation of starting a new project and navigating the interface.

Overview of layers list and file browser in QGIS interface.

10:17

Projections can be viewed and changed in the project settings.

The toolbar offers various preset options for working with maps.

11:58

You can change settings and access various tools in the customizable top toolbar.

The different menus provide access to a wide range of tools including vector, raster, and database tools.

15:22

Options for exporting nonspatial data like CSV with potential polygon features.

Differences between exporting options like KML, KMZ, shapefile, and geojson, with a recommendation for using geojson for simplicity.

17:00

Layers can be added to the map by right-clicking on them or dragging and dropping into the layer space.

Once the layer is added, data will populate on the map, allowing for zooming in and exploring at a granular level.

19:57

These layers include NYC parks Forever Wild map for ecologically important resources, Park permits for event setups, bike routes across the city, and even a unique squirrel census tracking fur colour.

Adding and visualizing these layers in QGIS to analyze different aspects of park data.

21:35

Installing the Quick Map Services plugin to add a base map.

Upgrading the plugin and saving the map.

24:37

Understanding layer rendering and order on the map.

Managing layers, reordering, and toggling them.

26:02

QGIS allows users to easily change projections for map visualizations.

Users can explore and experiment with different projections for their maps.

28:49

Using categorized option to colour or style data based on categorical values in the dataset.

Ability to customize colours and styles for different values and add Legends for better visualization.

30:24

Ability to change symbol size, opacity, remove stroke, and even do rotation.

Option to visualize numeric data through downloading specific datasets like the New York City tree census.

33:28

Use ‘Add Vector Layer’ to input latitude and longitude values.

Ensure correct spelling and projections (e.g., 4326) for accurate data display.

35:00

Adjust field data types using Processing Toolbox in QGIS.

Convert stump diameter field from text to decimal for accurate representation.

38:14

Identifying and removing data with many zero values to improve visualization accuracy.

Adjusting symbol sizes based on data attributes for clearer interpretation.

39:40

Symbol sizes can be customized from 2 to 18 for variance.

Further styling options include zoom-based controls and legend formatting adjustments.

42:36

Options for rule-based labeling and handling overlaps.

Ability to edit vector data, such as polygons, for customization.

44:08

Select the layer you want to edit by toggling editing or using the pencil icon.

Adjust vertices of the polygon layer to ensure accuracy by adding or moving vertices.

47:07

Toggle editing and trace the building shape by adding new shapes.

Utilize vertices and functions like panning to create accurate polygon layers.

48:39

Creating a new print layout to open the map view.

Options to export the map as SVG or PDF, adding legends, pictures, and scale bars.

51:39

Various plugins like mmqgis, qgis to web, Google Earth engine are available for QGIS.

Access and use plugins by installing them through QGIS interface.

53:18

Reproject data to change projection for accurate measurements.

Create buffers around features to analyze spatial relationships.

56:24

Use algorithms to detect and count points within polygons.

Easily create and save models for repeated analysis, with options to customize styles and export as a script.

57:56

Importing a 1 foot digital elevation model with large data size (3.5 GB).

Exploring park boundaries and observing features like reservoir and flat areas.

1:00:57

Various tools available for analyzing raster data such as reclassifying, zonal statistics, and raster creation.

Ability to convert raster to vector data, demonstrating elevation changes within a park using Hillshade analysis.

1:02:23

Interpolating elevation data is a common analysis, done to create elevation maps.

Using the processing toolkit to generate contoured layers and style them by elevation.

1:05:13

Enrich vector data with raster data for value extrapolation.

Utilize network analysis tools like shortest path and service area for bike path mapping.

1:06:46

Specify file name, geometry type (point), and IDs for points.

Toggle editing, add multiple points with IDs on map, and save editing.

1:09:52

Options for exporting layers and adjusting appearance.

Choosing export location and running the export process.

1:11:25

Ability to format and customize pop-up data in the web map.

Integration with new tools and mapping programs for data sharing and hosting.

Web map designed for a workshop in May 2024. Source: Norman Fellows.

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