diff --git a/src/interpolation/interpCommon.js b/src/interpolation/interpCommon.js
index 2beb10b..b4bfbbb 100644
--- a/src/interpolation/interpCommon.js
+++ b/src/interpolation/interpCommon.js
@@ -26,10 +26,13 @@ import jiggle from "../jiggle";
  */
 export function placeNearToNearestNeighbour(node, nearNeighbour, radius, sampleSubset, realDistances, endingIts) {
   let
-    dist0 = sumDistError(pointOnCircle(nearNeighbour.x, nearNeighbour.y, 0, radius), sampleSubset, realDistances),
-    dist90 = sumDistError(pointOnCircle(nearNeighbour.x, nearNeighbour.y, 90, radius), sampleSubset, realDistances),
-    dist180 = sumDistError(pointOnCircle(nearNeighbour.x, nearNeighbour.y, 180, radius), sampleSubset, realDistances),
-    dist270 = sumDistError(pointOnCircle(nearNeighbour.x, nearNeighbour.y, 270, radius), sampleSubset, realDistances),
+    sumDistErrorByAngle = function(angle){
+      return sumDistError(pointOnCircle(nearNeighbour.x, nearNeighbour.y, angle, radius), sampleSubset, realDistances);
+    })
+    dist0 = sumDistErrorByAngle(0),
+    dist90 = sumDistErrorByAngle(90),
+    dist180 = sumDistErrorByAngle(180),
+    dist270 = sumDistErrorByAngle(270),
     lowBound = 0.0,
     highBound = 0.0;
 
@@ -63,10 +66,7 @@ export function placeNearToNearestNeighbour(node, nearNeighbour, radius, sampleS
   }
 
   // Determine the angle
-  let angle = binarySearchMin(lowBound, highBound,
-                             function(angle){
-                               return sumDistError(pointOnCircle(nearNeighbour.x, nearNeighbour.y, angle, radius), sampleSubset, realDistances);
-                             });
+  let angle = binarySearchMin(lowBound, highBound,sumDistErrorByAngle);
   let newPoint = pointOnCircle(nearNeighbour.x, nearNeighbour.y, angle, radius);
   node.x = newPoint.x;
   node.y = newPoint.y;