import "azimuthal"; import "geo"; import "projection"; var d3_geo_gnomonic = d3_geo_azimuthal( function(cosλcosφ) { return 1 / cosλcosφ; }, Math.atan ); (d3.geo.gnomonic = function() { return d3_geo_projection(d3_geo_gnomonic); }).raw = d3_geo_gnomonic;