
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.
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.
Clip a raster layer by creating a temporary scratch polygon, digitizing the area, and applying a clip raster by mask layer to produce the clipped raster.
The course objective is to initiate the student in QGIS, a free and open source desktop geographic information system software, with a complex working environment which allows users to analyze and edit spatial information. QGIS supports multiple types of data (vector and raster formats), web services, providing in the same time, a variety of useful commands and utilities for geo-processing due to its integration with GDAL and OGR libraries.
The course is structured in units having different levels of difficulty that comes in help of the student who will learn the general concepts of a Geographical Informational System, working with vectorial, alphanumeric and raster data, handling the geo-processing tools and map creation.
Enrolled students in this online course will learn by the end of this course how to use Qgis effectively the course will cover only the basics in the beginning and an intermediate level section , and an advanced section will be added later.