|Communicating Route Data with GeoPDF (2007)|
There are a number of technologies to choose from for the delivery of maps and spatial data. The 'best tool for the job' depends on the audience, the data, and the project goal. There is no one right choice. As technology progresses, even today's best choice might soon be surpassed by newer options and toys.
Be sure to view the Project History
TerraGo Technologies GeoPDF
This is a widely adopted format for many purposes. For example, most of the USGS topology maps have been converted to the format. BLM's internal document management system also incorporated GeoPDF. This biggest advantage of this format is that GeoPDF maps are opened for viewing by Adobe PDF Reader. Most have this Adobe Reader on their computer. No special software is needed to view these maps. To create routes and comments, a small but free GeoPDF toolbar is needed.
While the route data is not of insignificant size itself, the reference layers were very large. The inclusion of topology and other large background maps make downloading the maps formidable via slower Internet connections. Primarily for this reason, Google mapping tools were chosen for the distribution of map data to the public.
The original GeoPDF project description and files remain posted here for your reference.
When only previous permitted route segments were to be considered for future race routes, an efficient method was need for race organizers identify previous route segments to create new route proposals, and for BLM staff to efficiently enter those routes into GIS for comparison with reference background data for analysis and approval.