Sunday, January 8, 2012

Projections update

Just a quick note:  with everybody having arrived in Skwentna, if the issue with the projections is that the software calculates them based on an incorrect assumption that they're headed south when they're actually headed north we'd expect to see them become correct when folks turned around and started heading south for real, but that's not what's happened.  Here's a look at the current leaderboard:

At this time, according to the tracking map, Nicolas Petit is about a mile from Yentna.  The projection says to expect him at race clock time 08:10, or roughly 13 hours ago.  That led me to wonder if the issue is actually just an incorrect offset, but I don't think so.  The tracker shows Lev about 4 miles back from Nicolas but he's projected to arrive 15 minutes later, which suggests that the tracker is projecting that Lev will cover those 4 miles at 16mph, and that ain't right, nohow.

It's worth pointing out, however, that the order in which the teams are projected to arrive in Yentna reflects what's going on on the trail, so whatever's going on here is systematic.

As always, remember the locations on the map do reflect where the team really was at the time the reading was taken, and those are data that can be relied on.

No comments:

Post a Comment