liamblake

.gpx-trip-length is always the same in Mapsource. Equal if no map is loaded in MS or a (routable) Map is loaded. I got the same results today. I was out in Lake Ontario assisting a swim marshal. The swimmers covered 17.5 km, but the trip odom measured 14.7km. The track log shows the correct distance. The speed and moving time didn’t seem very accurate either on the trip page. We were moving about 3km/hr most of the way, just like a slow walk. Interesting. I presume the 17.5mi was measured independently of gps. I wonder if its the low speed that's creating the error. All units will have less accuracy as distance/time gets very small. Maybe the HCx is not so accurate at slow speeds? I compared it to a Legend CX on the Rescue boat we were working off. His odometer matched my track measurements. Several times the non H was showing speeds where mine was showing zero. This caused the discrepancy in "moving time" between the gpsr's I saw similar results with my Rino 530HCx today. I walked about two miles, half in open skies and the other half through thick tree cover. The Mapsource track log shows I walked 2.1 miles. The trip odom shows 1.94 miles. I did not lose signal at all during the walk. When I was walking under the thick trees, however, the stopped time increased. When I got back under open sky, the stopped time stopped increasing. I did not stop at all during the 40 minute trip, yet the the stopped time is almost 7 minutes.