This is a collection of geographical data providing the raw data for a map of the world. Each file consists of a sequence of line segments. Each line segment has two points: x1 y1 and x2 y2, in that order. For example, the first line of Texas is: -103.0034 36.4802 -102.1604 36.4937 representing a line segment from (x1, y1) = (-103.0034, 36.4802) to the point (x2, y2) = (-102.1604, 36.4937). All information is in longitude (x) and latitude (y), in the range of -179.14 to 190.37 for longitude and 6.25 to 175.51 for latitude. Two main data sets are provided: a world map (world) and a map of the state boundaries of the United States (usa). These are kept in separate directories, usa and world. The usa directory has the following files. For each we also give its size in bytes: 6868 Alabama 7196 Nebraska 5544 Arizona 2484 Nevada 10336 Arkansas 4216 New-Hampshire 18648 California 6936 New-Jersey 2700 Colorado 3204 New-Mexico 3060 Connecticut 16456 New-York 3162 Delaware 25738 North-Carolina 306 District-of-Columbia 3572 North-Dakota 29954 Florida 8092 Ohio 12886 Georgia 9432 Oklahoma 8532 Idaho 8532 Oregon 11730 Illinois 5814 Pennsylvania 8704 Indiana 2210 Rhode-Island 8908 Iowa 10302 South-Carolina 3858 Kansas 5652 South-Dakota 14994 Kentucky 10268 Tennessee 22338 Lousiana 38524 Texas 13532 Maine 2088 Utah 19210 Maryland 4352 Vermont 9622 Massachusetts 24820 Virginia 28152 Michigan 19476 Washington 12920 Minnesota 13940 West-Virginia 12954 Mississippi 13260 Wisconsin 10370 Missouri 2808 Wyoming 8532 Montana The world directory has the following files. 200449 africa 73800 europe.pol 189871 africa.pol 303072 greenland 124230 antarctica 1206384 northamerica 709587 asia 14063 northamerica.pol 112012 asia.pol 38663 pacifica 169617 australia 377405 southamerica 653704 europe 70479 southamerica.pol Each file is the basic information for a continent. The *.pol files contain political boundaries. If you want only natural boundaries, do not use the *.pol files. If you want all political boundaries, you must use both files since most political boundaries are also natural boundaries. These two main data sets were independently constructed. As a result, they do not completely match (or possibly there was considerable continental drift between the the construction of the two of them). I don't know where the original data came from. It has been processed to get it into this form. Although all data has 4 decimal places, I doubt that it is that accurate. Two decimal places is more probably the limit of its accuracy. Please do not use this data to determine missile target coordinates. Obvious sources of improvement: a. label areas b. change segments (of 2 points) to poly-segments (of n points) c. Add cities, rivers James L. Peterson Software Technology Program MCC Austin, Texas james.peterson@mcc.com 15 Sept 1988