Qgis 101

Explore the user interface of a free open-source geographical information system for cartography and remote sensing, and learn how open-source software enables broad developer access.

Explore QGIS basics by creating vector layers—points, lines, and polygons—and saving shapefile and scratch layers, while configuring coordinate systems and building attribute tables with fields like country, id, and population.

Understand shapefiles versus temporary scratch layers in QGIS 101, including how to create, save, and make them permanent, how temporary layers aid clipping without saving, and viewing attribute tables.

Learn to modify shapefiles in QGIS, edit vertices, and manage features, then seamlessly add a satellite base map using XYZ tiles and Esri imagery for geospatial analysis.

Learn to import and work with digital elevation models in QGIS by downloading SRTM DEM from Earth Explorer, converting rasters to contour lines, and inspecting elevation attributes.

learn to download ready-to-use 25 m contour shapefiles from an online world map, select regions, and import into your GIS workflow for quick analysis.

Import text delimited data into QGIS by adding a delimited text layer with a semicolon delimiter. Map x, y, and elevation coordinates using borehole id and a projection.

Master editing attribute tables in QGIS by exporting to shapefile, creating the sample table for drill holes, and defining field types (text, integer, yes/no) to manage drill hole data.

Learn to use the QGIS field calculator to create a new field named sample with random yes/no values using rand and an if condition, including handling of virtual fields.

Explore interactive layer styling in Qgis 101 by editing symbols, colors, sizes, strokes, and rotation, including category-based coloring and labeling of drill holes for clear visualization.

Learn to export and load layer styles in QGIS to preserve the exact symbology of a shapefile when shared or opened in another project, ensuring consistency across clients.

Create a table relationship between drill hole coordinates and geology data to view geology intervals in a nested table linked by the drill hole name.

Enable watch file in QGIS to automatically update the attribute table and styling from a csv or delimited text layer, using the processing column to reflect 0/1 status.

Join two csv files by borehole id to merge x, y coordinates with elevation data and update the attribute table with the z values in Qgis 101.

Install the profile tool plugin from the Qgis plugins manager. Create a DSM profile to visualize cross sections with geology layers.