peterson@milano.UUCP (12/10/86)
I have begun to accumulate a lot of geographic data and need a standard form to put the data in. I expect that new data will need to be converted into the standard form, but at least all of my programs could be made to work with just one representation. Can anyone suggest previous work that may have been done on a data representation format for geographical data? I have outlines of states, countries, oceans as well as city street data. It appears to me that all of the data is made up of three basic types: point line area points have names, location (x,y or lat,long), and annotations. lines have names, a list of points, and annotations. areas have names, annotations and either a list of lines defining an outline or a list of (sub)areas. From this I can define a representation (ASCII, free-format), but would like to know what other people have done first. Thanks. -- James Peterson peterson@mcc.com or ...sally!im4u!milano!peterson
lee@rochester.UUCP (12/11/86)
In article <3112@milano.UUCP>, peterson@milano.UUCP writes: > Can anyone suggest previous work that may have been done on a > data representation format for geographical data? The (US) Bureau of Census has a text encoding of city maps called "GBF/DIME". Basically, it consists of records of line information which can be also be used as bounds for areas. For more information, contact Data User Services Division Bureau of the Census Dept. of Commerce Washington, D.C. 20233 The Geological Survey is also starting to encode map data in computer form. Contact the USGS in Reston, VA 22092. lee