X-Git-Url: https://git.gag.com/?p=fw%2Faltos;a=blobdiff_plain;f=altoslib%2FAltosFlightSeries.java;h=5cf552fcf00d178048f56fbafe3f2815b279820e;hp=944cff31851a1d03cdd7fa72cfabf4db5d74b214;hb=b6b5c64f93fa56bcb22ea1c4279e4f754e6e6f1c;hpb=8b4dcca73c65e87462d5f8d08dbc025aa8cf08a6

diff --git a/altoslib/AltosFlightSeries.java b/altoslib/AltosFlightSeries.java
index 944cff31..5cf552fc 100644
--- a/altoslib/AltosFlightSeries.java
+++ b/altoslib/AltosFlightSeries.java
@@ -216,7 +216,7 @@ public class AltosFlightSeries extends AltosDataListener {
 
 	private void compute_height() {
 		double ground_altitude = cal_data.ground_altitude;
-		if (height_series == null && ground_altitude != AltosLib.MISSING) {
+		if (height_series == null && ground_altitude != AltosLib.MISSING && altitude_series != null) {
 			height_series = add_series(height_name, AltosConvert.height);
 			for (AltosTimeValue alt : altitude_series)
 				height_series.add(alt.time, alt.value - ground_altitude);