Teacher survey counts per day script

scripts/analytics/mongodb/queries/teacherSurveyCounts.js

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+ // Print out teacher survey counts by day
+
+// Usage:
+// mongo <address>:<port>/<database> <script file> -u <username> -p <password>
+
+var surveyDayMap = {};
+var cursor = db['trial.requests'].find({type: 'subscription'});
+while (cursor.hasNext()) {
+  var doc = cursor.next();
+  var date = doc._id.getTimestamp();
+  var day = date.toISOString().substring(0, 10);
+  if (!surveyDayMap[day]) surveyDayMap[day] = 0;
+  surveyDayMap[day]++;
+}
+
+var surveysSorted = [];
+for (var day in surveyDayMap) {
+  surveysSorted.push({day: day, count: surveyDayMap[day]});
+}
+surveysSorted.sort(function(a, b) {return b.day.localeCompare(a.day);});
+print("Number of teacher surveys per day:")
+for (var i = 0; i < surveysSorted.length; i++) {
+  var stars = new Array(surveysSorted[i].count + 1).join('*');
+  print(surveysSorted[i].day + "\t" + surveysSorted[i].count + "\t" + stars);
+}