What is GIS?
GIS is a technological field that incorporates geographical features with tabular data in order to map, analyze, and assess real-world problems.
Types of GIS Data Explored: Vector and Raster
This article discussions different types of GIS data in both vector and raster formats.
Imagery and Its Use in GIS
Most imagery for use in GIS projects consist of satellite images or aerial photographs but it can also include, thermal images, digital elevation models (DEMs), scanned maps and land classification maps. This article examines imagery and how to effectively gather, store, process and interpret it for a variety of different GIS projects.
New Global Elevation Data Available: Global Multi-resolution Terrain Elevation Data 2010
NGA and USGS revised and improved their global elevation model.
Satellite imagery
Digital imagery can greatly enhance a GIS. Part of the raster data types, imagery is a powerful visual aid and serves as a source of … Read more