X-Git-Url: http://gitweb.fperrin.net/?p=GpsPrune.git;a=blobdiff_plain;f=tim%2Fprune%2Fdata%2FGradientCalculator.java;fp=tim%2Fprune%2Fdata%2FGradientCalculator.java;h=04846e7914f8a4c133a0c00a18a4d2ba0c14c0bf;hp=0f608bda9c315f359d8ae0f9e5fec75ee1c71f57;hb=1a735a99408fd3b0c5ac4fe7b2fdbdbb23d38f40;hpb=92dad5df664287acb51728e9ea599f150765d34a

diff --git a/tim/prune/data/GradientCalculator.java b/tim/prune/data/GradientCalculator.java
index 0f608bd..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);