init

node_modules/geomagnetism/lib/parsers/cof.js

@@ -0,0 +1,40 @@
+module.exports = function(str){
+	var result = {
+		main_field_coeff_g: [0],
+		main_field_coeff_h: [0],
+		secular_var_coeff_g: [0],
+		secular_var_coeff_h: [0],
+		n_max: 0,
+		n_max_sec_var: 0
+	};
+	var lines = str.split(/\r?\n/);
+	for(var i = 0; i < lines.length; i++) {
+		var line = lines[i];
+		var vals = line.match(/\S+/g);
+		if(!vals) continue;
+		if(vals.length === 3){
+			result.epoch = parseFloat(vals[0]);
+			result.name = vals[1];
+			result.start_date = new Date(vals[2]);
+			result.end_date = new Date(vals[2]);
+			var year = result.start_date.getFullYear();
+			result.end_date.setFullYear(year + 5);
+		}
+		if(vals.length === 6){
+			var n = parseInt(vals[0]);
+			var m = parseInt(vals[1]);
+			if(m <= n) {
+				var i = (n*(n+1)/2+m);
+				result.main_field_coeff_g[i] = parseFloat(vals[2]);
+				result.main_field_coeff_h[i] = parseFloat(vals[3]);
+				result.secular_var_coeff_g[i] = parseFloat(vals[4]);
+				result.secular_var_coeff_h[i] = parseFloat(vals[5]);
+			}
+			if(n > result.n_max){
+				result.n_max = n;
+				result.n_max_sec_var = n;
+			}
+		}
+	}
+	return result;
+};