A Map Projection for Quick Computer Display
Want to display some geographic data on a computer screen? Here's a quick simple map projection that will do the job nicely for a modest sized region, away from the poles. The data are assumed to be given in latitude and longitude coordinates. The number of Lat/Lon points and the name of the file containing these points must be known. The main parameter is the average latitude of the region in question, and this is computed by the program. The average longitude is also needed, to center the projection. The projection uses the Gaussian mean radius sphere at the average latitude on the Clarke ellipsoid of 1866. A small program change permits the use of the WGS83 ellipsoid. An output file name is also required.