FOSS GIS

What is PostGIS?

September 28, 2017By Mark AltaweelGIS Software

PostGIS is an Open Geospatial Consortium (OGC) compliant software used as an extender for PostgreSQL, which is a form of object-relational database. While PostGIS is free and open source, it is used in both commercial (e.g., ArcGIS) and open source software (e.g., QGIS).

Using Free and Open Source GIS to Support Natural Resource Management in the Developing World

June 25, 2017By GIS ContributorGIS Software

Rohan Fisher discusses the GIS capacity building work he has undertaken to enable decentralised evidence-based natural resource management in the developing world.

The USGS Landsat Analysis Ready Data (ARD) Program

Landsat data is available for download from EarthExplorer for the conterminous United States, Alaska, and Hawaii referenced using the WGS84 datum and provided as GeoTIFF data

Preserving a Landscape Through Maps and Photography

Knowing how to preserve books, film and other information is common practice for libraries and museums. Maps, especially, can showcase that data for those who want to look back on the history of an area.

Elements of a Map

Maps are the primary tools by which spatial relationships are visualized. Maps therefore become important documents. There are several key elements that should be included each time a map is created in order to aid the viewer in understanding the communications of that map and to document the source of […]

Learn GIS for Free

There are a few online options to learn GIS for free. Take advantage of resources that provide you access to free courses from some of the world’s best universities and institutions. Learn GIS on your own or supplement your existing geospatial education with these free resources.