WRSC2018 - day 3 - area scanning

[Sophia M]

Schedule:

12:30 - 14:00: Micro sailboat area scanning time (1.5 hours)

14:00 - 14:15: Break

14:15 - 15:15: Sailboat area scanning time (1 hour)

Teams can make an extra attempt after 15:15, if trackers and support vessels are available. The scan time for the unscheduled attempt is 45 minutes for micro sailboats and 30 minutes for sailboats. Teams that did not achieve a start in the scheduled time are given priority; the best attempt is counted.

[sotonsa...@gmail.com]

Cells are 4 by 4m squares, the entire area is a rectangle defined by 4 waypoints:

A     B

C     D

The waypoints location are on the github repository: https://github.com/WRSC/coordinates2018/blob/master/area_scanning.csv

There is 58 cells between A and C. And 45 cells between A and B.

[William Hogg]

Hi can i get some documentation for the api request? i can't seem to find a reference in the repo or in the mailing list.

On Tuesday, 28 August 2018 17:57:47 UTC+1, Sophia M wrote:

[Thomas Kluyver]

Sorry everyone, I forgot to post about this.

The URL for the tracking data is like this:

http://tracking.roboticsailing.org/missions/5/latest_coordinates?limit=10

The number after /missions/ is a mission ID. Today that's 5 for the big boats, and 6 for the small boats. Use numbers 1-4 to see the data format from previous days.

The trackers record one point per second. ?limit=10 specifies how many points you want for each boat: you can request up to 500. There's no way currently to get earlier data from this API. The live tracking data may be incomplete if the trackers can't get a mobile data connection for a while - we can't fill in the gaps for the live data (we get the full data off the tracker when it comes back in).

Data format: JSON array of robots: each has tracker and robot IDs, robot name and team name. Each also has a JSON array of track points. Each point has latitude and longitude from the GPS (so in the usual WGS-84 coordinate reference system), and a timestamp for when it was taken, in RFC 3339 format, so you can see how recent it is. Note that the timestamps are in UTC, not local time - British Summer Time is 1 hour ahead of UTC.

Let me know if you have any questions.

Thomas