X-Git-Url: https://gitweb.fperrin.net/?a=blobdiff_plain;f=tim%2Fprune%2Fdata%2FGradientCalculator.java;h=04846e7914f8a4c133a0c00a18a4d2ba0c14c0bf;hb=1a735a99408fd3b0c5ac4fe7b2fdbdbb23d38f40;hp=97a691fe34178260ca30c8d8e02da1cce208b9b4;hpb=a6197ddcaac11c0b943183da7d46169742d024af;p=GpsPrune.git

diff --git a/tim/prune/data/GradientCalculator.java b/tim/prune/data/GradientCalculator.java
index 97a691f..04846e7 100644
--- a/tim/prune/data/GradientCalculator.java
+++ b/tim/prune/data/GradientCalculator.java
@@ -14,7 +14,10 @@ public abstract class GradientCalculator
 	 */
 	public static void calculateGradient(Track inTrack, int inIndex, SpeedValue inValue)
 	{
-		inValue.setInvalid();
+		if (inValue != null)
+		{
+			inValue.setInvalid();
+		}
 		if (inTrack == null || inIndex < 0 || inValue == null)
 		{
 			System.err.println("Cannot calculate gradient for index " + inIndex);
@@ -40,7 +43,7 @@ public abstract class GradientCalculator
 				&& p.hasAltitude() && q.hasAltitude())
 			{
 				final double horizRads = DataPoint.calculateRadiansBetween(p, point) +
-					DataPoint.calculateRadiansBetween(point,  q);
+					DataPoint.calculateRadiansBetween(point, q);
 				final double horizDist = Distance.convertRadiansToDistance(horizRads, UnitSetLibrary.UNITS_METRES);
 				final double heightDiff = q.getAltitude().getMetricValue() - p.getAltitude().getMetricValue();
 				// Get gradient in radians