Init from given files

examples/js/distances/manhattanDistance.js

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+/**
+ * Calculate the distances by using the numbers, strings and dates.
+ * @param  {node} source
+ * @param  {node} target
+ * @param  {array} properties - the properties of the nodes.
+ * @return {number}            the distance between source and target nodes.
+ */
+function calculateManhattanDistance(source, target, properties, normArgs) {
+  var sum = 0.0,
+    cols = 0;
+
+  // console.log(properties);
+  // Iterate through every column of data
+  for (var i = 0; i < properties.length; i++) {
+    property = properties[i];
+    if (property.toLowerCase() !== "class" && property.toLowerCase() !== "app" && property.toLowerCase() !== "user" && property.toLowerCase() !== "weekday") {
+      var s = source[property],
+        t = target[property];
+
+      if (s !== t) {
+        cols++;
+      }
+
+      if (normArgs.sig[i] !== 0) {
+        s = (s - normArgs.avg[i]) / (2.0 * normArgs.sig[i]);
+        t = (t - normArgs.avg[i]) / (2.0 * normArgs.sig[i]);
+      }
+      sum += Math.abs(s - t);
+    }
+  }
+
+  // console.log(Math.sqrt(sumDiff)/cols);
+  return sum * (cols / properties.length);
+}