Introduction to Geographic Information System in QGIS

Explore QGIS, the free open source GIS software for geospatial data analysis and cartography, enhanced by plugins and a user-friendly desktop interface.

Discover how to prepare a computer for geospatial analysis in QGIS, covering hardware and software requirements, memory, storage, 64-bit systems, graphics, and free GIS tools.

learn how to install and manage QGIS plugins, including Sentinel Hub plugin and semi-automatic classification plugin, to enable supervised remote sensing workflows for land use and land cover mapping.

Explore free GIS data sources for your projects, including natural resources data, open data portals, Google Maps, Sentinel Hub, USGS Earth Explorer, and Google Earth Engine for raster imagery.

Save your QGIS project to preserve symbology, labeling, and loaded datasets so you can resume where you left off; save frequently, especially before analysis.

Learn how to read an Excel sheet into QGIS and join its demographic attributes to a polygon layer using a common ID field, creating a permanent combined dataset.

Explore how attribute tables attach Excel-like data to vector features in QGIS, including viewing, selecting, editing, and computing new attributes and geometry operations for points, lines, and polygons.

Master selecting feature subsets in QGIS using select all, invert selection, select by expression, and map-based tools, then export the results as new layers.

Add new columns to an attribute table and compute geometry attributes (area and perimeter) in QGIS, using the geometry attributes tool with a projected coordinate system and appropriate units.

Learn to edit attribute tables in QGIS by activating editing mode, deleting or duplicating features, and saving changes. Update fields, select columns, and calculate new features from existing data.

Learn to manage attribute tables in QGIS by adding new fields, recalculating areas from square feet to square meters with the field calculator, and safely updating or creating fields.

Explore core vector analysis in QGIS, including basic geometric operations, vector overlay, distance calculations, area computation, and polygon-line-point overlays, with emphasis on practical preprocessing and sliver handling.

Explore vector data editing and cleanup in GIS, including clipping, updating, dissolving, merging, and eliminating polygons, plus creating buffer zones for comprehensive geospatial analysis.

Create a variable distance buffer around lakes in QGIS by assigning per size class distances with field calculator and select by attributes, then use data-defined distance in the buffer.

Calculate polygon areas in QGIS with a field calculator using a projected coordinate reference system in meters, then convert to hectares and sum the suitable area with basic statistics.

Explore local raster operations in map algebra, performing pixel-by-pixel boolean and arithmetic operations across multiple layers without neighborhood context. Learn examples like and/or, reclassification, and scalar multiplication to model features.

Compute topographic features from digital elevation models using raster analysis in sugar, loading Walli three and Wolin nine Rasta layers to derive hillshade.

Learn to compute slope and aspect from a digital elevation model in QGIS using raster analysis, choosing slope as percent, selecting formulas, and visualizing results with color ramps.

Explore resampling rasters in QGIS using Saga Toolbox to change spatial resolution, comparing nearest neighbor and linear interpolation for upscaling and downscaling.

Apply a low pass filter to a raster digital elevation model using saga toolbox to smooth artifacts and compare shaded relief before and after filtering.

Create your gis map in QGIS by loading a shapefile, applying categorized symbology to u.s. regions, and building a print layout with legend and title, then export as an image.

Explore the instructor's Udemy page, YouTube channel, and social profiles to discover 34 remote sensing, data science, and machine learning courses, updates, and promotions for geographic information system learning.