Cartographers typically do the following:
Photogrammetrists typically do the following:
Cartographers and photogrammetrists use information from geodetic surveys (land surveys that account for the curvature of the Earth's surface) and remote-sensing systems, including aerial cameras and satellites. Some also use light-imaging detection and ranging (LIDAR) technology. LIDAR systems use lasers attached to planes or cars to digitally map the topography of the earth. Because LIDAR is often more accurate than traditional surveying methods, it can also be used to collect other forms of data, such as the location and density of forest canopies.
Cartographers and photogrammetrists increasingly work on online and mobile maps. Interactive maps are growing in popularity, and cartographers and photogrammetrists collect data and design these maps for mobile phones and navigation systems.
Cartographers and photogrammetrists also create maps and perform aerial surveys for governments to aid in urban and regional planning. Such maps may include information on population density and demographic characteristics. Some cartographers and photogrammetrists help build maps for government agencies for work involving national security and public safety. Accurate and updated maps help emergency responders provide assistance as quickly as possible.
A cartographer who uses GIS technology to create maps is often known as a geographic information specialist. GIS technology is typically used to assemble, integrate, analyze, and present spatial information in a digital format. Maps created with GIS technology combine spatial graphic features with nongraphic information. These maps are used to provide support for decisions involving environmental studies, geology, engineering, land-use planning, and business marketing.