Beginner Video Series
Welcome to the QGreenland Beginner’s Tutorial Series. In this series, you will become familiar with QGIS, download and browse the QGreenland Core data package, and be introduced to the processing toolbox for basic geospatial data analysis.
This tutorial requires that QGIS is installed on your computer. Go to qgis.org and download the free QGIS software. QGIS version 3.16 is the oldest version supported by QGreenland.
The tutorial series contains 7 sessions. The goals of each session are as follows:
Understand what geospatial data is
How to download QGIS and QGreenland Core package
Obtain a general understanding of what GIS and QGreenland are
Explore the QGreenland Core package folders
Access properties, attributes, and metadata of layers
Know the difference between vector and raster layers
Identify different layer types in Layers Panel
Change display or symbology of layers
Locate and open the processing toolbox
Select by attribute in a vector layer
Run basic statistics on a vector attribute field including sum, mean, and range
Calculate the surface volume area of a raster layer
In our example, ‘select by attribute’ for a population greater than 5000 would only work on an integer field. In v2.0, the population size field is a text string and you will first need to use the field calculator to convert the population field into an integer. To do so:
Open up the attribute table, and click the ‘Open field calculator’ icon.
Check ‘Create a new field’. Designate an output field name (example: pop_numeric) and select the output field type ‘Integer (32 bit)’. In the expression panel, choose the field ‘population’. Click OK.
Edit existing layers in the QGreenland Core Package
Create a new Vector layer
Manage layer locations and removal of layers
Export a QGreenland Map for publication