Sensors and Systems
Breaking News
Trimble Showcases New Artificial Intelligence Innovations During Dimensions User Conference
Rating12345AI advancements extend value of Trimble construction technology and expertise...
Trimble SketchUp Surpasses One Million Active Subscribers
Rating12345Industry-standard 3D software reaches new growth milestone LAS VEGAS...
Trimble Expands Access to Advanced Construction Project Management Capabilities with Free Version of ProjectSight Software
Rating12345Increased accessibility through a no-cost option enables all contractors...

September 21st, 2011
US Topo Product Standard

  • Rating12345

This document defines a U.S. Geological Survey (USGS) digital topographic map. This map series, named “US Topo,” is modeled on what is referred to as the standard USGS 7.5-minute (1:24,000-scale) topographic map series that was created during the period from 1947 to approximately 1992. The US Topo map product has the same extent, scale, and general layout as the older standard topographic maps. However, unlike the previous maps, US Topo maps are published using Adobe Systems Inc. Portable Document Format (PDF) with a geospatial extension that is called Georeferenced PDF (GeoPDF), patented by TerraGo Technologies. In addition, the US Topo map products incorporate an orthorectified image along with data that was included in the standard 7.5-minute topographic maps. US Topo maps are intended to serve conventional map users by providing Geographic Information System (GIS) information in symbolized form in the customary topographic map layout. The maps are not intended for GIS analysis applications. Read More

Leave a Reply

Your email address will not be published. Required fields are marked *