function hrap(lon,lat){
var deg2rad = function (deg) { return deg * (Math.PI / 180); };
var stlat = 60.0;
var clon = 15.0;
var rad = 6371.2;
with (Math){
var sfactor = (1+sin(deg2rad(stlat)))/(1+sin(deg2rad(lat)));
var R = rad*cos(deg2rad(lat))*sfactor;
var x = R*cos(deg2rad(lon+clon));
var y = R*sin(deg2rad(lon+clon));
var hrapx = x/4.7625 + 401;
var hrapy = y/4.7625 + 1601;
}
print(hrapx);
print(hrapy);}
hrap(-76.5633,39.7478);
hrap(-124.6132,42.7528); 

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