Where is the Central Meridian?
The central meridian is the center line of longitude for projection systems. Projected coordinate systems often use it as a reference point for a x-origin.
Articles
How to Track the Spread of Viruses Using GIS
Everyday, communities are at risk of transmissible diseases and growing pandemics like COVID-19. We use GIS to track the spread of viruses in real-time maps.
Mango Map Review – Simplicity is Sophistication
Mango Map is ideal for casual users who don’t want a fancy map. This web mapping platform is easy to get a hang of at a reasonable price.
What is Geodata? A Guide to Geospatial Data
Geodata is location data stored in a Geographic Information System (GIS). By using geographic data, we better tackle problems that require spatial thinking.
Internet of Things (IoT) in GIS
The Internet of Things (IoT) connects billions of sensors from around the world, enabling the exchange of information between them.
AVHRR: Advanced Very High Resolution Radiometer
AVHRR (Advanced Very High Resolution Radiometer) spatial resolution is actually very coarse at 1.1 km. But its revisit times are “very high” at just one day.
Geodesign: Integrating Geography and Design
Geodesign is the field of study that combines geography with design. Design shapes our world by addressing the needs of people and promoting more resiliency.
50 Map Projections Types: A Visual Guide
If you’re in need of a visual reference guide to map projection types, this goldmine of the top 50 global map projections used by cartographers will help.
5 Free Historical Imagery Viewers to Leap Back in the Past
When you want historical imagery, the best web viewers are Google Earth, Esri’s Wayback Living Atlas, USGS LandLook, NASA Worldview and Planet’s Stories.
What Is GeoEnrichment?
Geoenrichment is a process that assigns demographic attributes such as education, income, or age to polygons based on geographic location.