Fix bugs, clean up comments

src/interpolation/helpers.js

@@ -12,7 +12,7 @@ export function takeSampleFrom(sourceList, amount) {
   let randElements = [],
       max = sourceList.length;
 
-  if (amount <= max) {
+  if (amount >= max) {
     return {sample: sourceList, remainder: {}};
   }
 

src/neighbourSamplingDistance.js

@@ -3,7 +3,7 @@ import jiggle from "./jiggle";
 import {getStress} from "./stress";
 
 /**
- * The implementation of Chalmers' 1996 Neighbour and Sampling algorithm.
+ * An implementation of Chalmers' 1996 Neighbour and Sampling algorithm.
  * It uses random sampling to find the most suited neighbours from the
  * data set.
  */
@@ -23,7 +23,7 @@ export default function () {
     dataSizeFactor;
 
   /**
-   * Apply spring forces at each iteration.
+   * Apply spring forces at each simulation iteration.
    * @param  {number} alpha - multiplier for amount of force applied
    */
   function force(alpha) {
@@ -48,7 +48,7 @@ export default function () {
       for (let [sampleID, highDDist] of samples) {
         setVelocity(node, nodes[sampleID], highDDist, alpha);
       }
-      // Replace neighbours with better ones found in the samples
+
       neighbours[i] = findNewNeighbours(neighbours[i], samples);
     }
 
@@ -62,6 +62,7 @@ export default function () {
       velocityDiff /= n*(neighbourSize+sampleSize);
 
       if(stableVeloHandler!==null && velocityDiff<stableVelocity){
+        //TODO remove console logs
         console.log("Neighbour sampling is now", velocityDiff, ", calling stableVeloHandler().")
         stableVeloHandler();
       }
@@ -91,6 +92,7 @@ export default function () {
     source.vy += y;
   }
 
+  // Called on nodes change and added to a simulation
   function initialize() {
     if (!nodes) return;
 
@@ -168,15 +170,14 @@ export default function () {
   }
 
 
-  // API for initializing the algorithm, setting parameters and querying
-  // metrics.
+  // API for initializing the algorithm and setting parameters
   force.initialize = function (_) {
     nodes = _;
     initialize();
   };
 
   force.neighbourSize = function (_) {
-    return arguments.length ? (neighbourSize = +_, initDataSizeFactor(), force) : neighbourSize;
+    return arguments.length ? (neighbourSize = +_, initialize(), force) : neighbourSize;
   };
 
   force.sampleSize = function (_) {