In order to improve your GIS skills, TYC GIS Training (www.giscourse.com) have prepared you a list of courses with 20% discount. The promotion is available in April and it is applied to the following courses:     The discount is available for payments by credit card or PayPal through the web. When making the payment, [...]

Digital maps serve as effective tools when it comes to managing emergency situations like epidemics. Dr. John Snow (do not confuse it with the King beyond the wall) is considered to be the first to use typical Geographic Information Systems tools to analyze an emergency situation. The English doctor determined, after making a spatial analysis [...]

Sometimes when you find yourself in need for some spatial data like, roads, buildings, waterways, etc. you can check the OpenStreetMap Database. Maybe you will find something there. This can depend on your location. But if you want also to visualize, manage and analyze your data you can use the QGIS software and its QuickOSM [...]

OSGeo4W is a binary distribution of a broad set of open source geospatial software for Windows environments. OSGeo4W includes QGIS, GDAL/OGR, GRASS as well as many other packages. Check the official website for more information: http://trac.osgeo.org/osgeo4w/ Sometimes QGIS installation can be a troublemaker. For example you will install QGIS and you will notice that Style Manager will not show any symbols. The [...]

Maybe sometime you will need to edit some raster cells and change their values. Using the Serval QGIS Plugin you can do this. You can install this plugin by going to Plugins > Manage and Install Plugins and typing Serval in the search box. After the installation is done you can find the newly installed [...]

pgRouting is an extension of PostGIS (geospatial database), which in turn, is an extension of PostgreSQL database system. It adds routing capabilities and network analysis functionalities to the PostGIS geospatial database. You can perform different network analysis, shortest paths, driving distances, service areas on a topological corrected network. To be able to perform route analysis [...]

For this exercise please use QGIS version 2.18. Various vector layers and tables (OGR, SpatiaLite, PostGIS, MSSQL Spatial or Oracle Spatial) can be edited in QGIS.  Before you start a editing session in QGIS, make sure you set the right snapping options (Snapping Tolerance and Search Radius). In QGIS you can find these options in [...]

The CORINE Land Cover (CLC)  data consists of an inventory of land cover in 44 classes. Its minimum mapping unit is 25 hectares (in the case of polygon features) and 100 m for lineal features. Datasets are available for the years 1990, 2000, 2006 and 2012, covering the European continent (except Belarus, Ukraine and Russia) [...]

In this exercise we will try to incorporate the height of the build-up areas (average height of 15 m) above the surface of a digital terrain model. In order to do that we will have to follow a few simple steps. Step 1: Load your necessary data into QGIS map canvas Step 2: We will have to [...]

In this exercise we will see how to delineate the boundary of a catchment/contributing area using a Digital Elevation Model and a given point (a specific point for which we want to find the contributing/catchment area). ArcGIS can obtain the total area of flowing into this specific point, also called pour point. In order to [...]