Component totals and averages for a PDF set

mr_component_totals.js

var map = function () {
    this.structure.components.component.forEach(
		function (z) {
			emit(z.name, {count: 0, total: z.count, avg:0});
		}
	);
}

var reduce = function (key, values) {
    var count = db.malware.count();
    var total = 0;
    for (var i = 0; i < values.length; i++) {
    		total += values[i].total;
    }
	avg = total/count;
    return { count: count, avg: avg, total: total};
}

db.malware.mapReduce(map,reduce, {out: "component_totals" });