Facebook

Login

Support Sailonline

If you haven't already - join the SAILONLINE YACHT CLUB!

Please also consider making a donation - all amounts are greatly appreciated!

Board » Technical Support » qtVlm thread

Page: First Previous 3 4 5 6 7 8 9 Next Last

FYI there was some changes (fixes) in instruments (gauges) concerning TWA/TWD/AWA/AWD etc and since I remember there was once some problems with SOL can you please check nothing is broken? I don't have a boat racing so I cannot test it myself.
Thanks
Philippe
qtVLM 5.4.0-beta4 quick tests with sol. Intruments ok with brainaids and kipper's AG tool. Routing seems to work as expected also. Couldn't find any problems.
TWA number when wind is from the port, is colored green (not red). Is this ok?
Yes it is normal. You have a small round icon red/green that shows port/starboard. Green in the numbers means it's within the polar angles. Numbers become red if not (for instance if you go upwind at 5° twa)
Thanks for testing I was a bit worried about that one ;)

Philippe.
Viva Philippe and all.

In general I feel some improvements in qT (5.4.0-beta4) routing process.
I also see that one my previous suggestions - related with the CSV output files columns - were also implemented.

Anyhow, some qT problems remain and they are described in the PDF attached file.

I didn't find out where you: "Add a possibility to compare actual boat's speed with polar speed in board".

Thank you Philippe.


--- Last Edited by JB at 2016-10-10 10:08:01 ---
Sail Fair.
Attachments
Psail, are you sailing the SOL boat ? :)


ps, the beta runs fine here.

--- Last Edited by dikkehenk at 2016-10-11 08:46:12 ---
Thanks for your feed back

I couldn't reproduce the pb with VMC. If I change the target POI the VMC is updated accordingly here.

Concerning the "past poi" issue, in VLM mode I know a WP has been reached because VLM server has this information. But here how am I supposed to decide if a POI was reached while the computer was off? Just because it is somehow "behind" is not enough. If you have a solution please tell me. Note that in the options you can check "automatically remove from route POIs before current WP", in that case the only thing you have to do is to set the current active WP to another POI in the route and all "past" WP will be automatically removed. This option is available in the main parameters windows to make it persistent, or at the route level.

Concerning the management of POIs and route etc, that is on the todo-list... one day for sure it will reach the top of the list ;)

Philippe
Viva Robbie.

Nope, I'm not sailing the Sol boat.

I've only used a particular boat just for the last qT version tests purpose.
And just that.

A Big Hug!
Sail Fair.
Viva Philippe,

Good afternoon.

VMC problema.

The VMC problema really exists and, again confirmed by me.
The reason you didn’t replicated the issue is probably because you didn’t use test waypoints like the ones I’m describing now.
Try to put a waypoint before the IDL and another one after (from East to West direction).
If you calculate VMC for the first waypoint it goes normaly.
Now, try to calculate VMC for the second waypoint (the one to West of the IDL).
You get the problema.

Waypoints in the “past”, suggestion for a solution.

If the boat GPS is connected she is moving, ok.
If she is moving at a reasonable speed it is obvious that the first waypoints will be “in the past” when the routing stops.
Each calculated waypoint has geo coordinates and time stamp. The same for the boat when the routing stops.
If the boat’s time stamp is higher than the calculated waypoints, those should be eliminated, being he first to be used in the process the one who has a big time stamp than the boat.

Thank you Philippe.
Sail Fair.
New beta available (tomorrow is probably the release day)

http://www.virtual-winds.org/forum/index.php?/topic/7575-qtvlm/&do=findComment&comment=269865

That fixes your VMC issue (btw potentially a much more serious problem than just VMC instrument, thanks for reporting that).

As for the "past POIs" theory, your idea is not a correct solution: first of all you have to understand that eta to a poi is recalculated every time your boat moves, something is changed in the route, the grib changes, your polar changes, etc. There is nothing like a "fixed eta" concept. Let's imagine I find a way to add such a strange concept. Even if you POI "fixed eta" is in the past does not prove anything: what if you spent 5 days away from this pc and just switch it on? Grib has changed, you might have change the route itself because you are on way back, etc. I can imagine many cases where it will be wrong to delete "past" POIs from a route.

Better set a new POI as target, and all past POIs will be removed by the route at once, if the correct setting is activated.

Cheers and thanks again for your input,
Philippe
Is it possible to have QtVLM automatically choose a new POI as target? You could just pick the POI of the route closest to the boat, but better is probably to skip the closest and pick the next one (or the one after). Just make a small selection of candidates (the closest one, and a couple POIs further down), try them all, then choose the one that yields the earliest ETA. Instead of recalculating the complete route, calculating the ETA for the POI within the selection that is furthest down the route should be sufficient to pick the best target.

When you deviate more than just a little from the route, this might not work properly, but in that case you'd have to re-route anyway.

Page: First Previous 3 4 5 6 7 8 9 Next Last

Please login to post a reply.

Races

Next Race: 00d 00h 00m


Current Races:

Fremantle to Bali 2022
It is time for a revival of one of Australia's iconic races, the 1427 nm long "Fremantle to Bali" race, and it's considered to be a true test of seamanship.
Last raced in 2021 Super Maxi 100, we will do it this year in a Sun Fast 3300 which is considerably slower!
PRIZE: SMPF
Race #1632
INFOby brainaid.de
Sunfast 3300 PARTICULARS
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking:
OCQ4 - OCCH - SUPSOL - SYC
Race starts: Dec 04th 06:00 Registration Open!

▶ Flash
GO TO RACE

Baker Lake Ice Race 2022
Up north, it’s Winter, so time to put your skates on, but first you’ll have to airfreight them, your carbon spars, your mylar sails and your DN hull to Baker Lake, for a 109nm race, the first of 4 (3 to count) at high speed before the ice melts! Well inside the Arctic Circle, this is a cold, cold place, where the wind is rarely benign. No Performance Loss, so put your goggles on, wrap up well, and try to get round as quick as you can!
Race #1615
INFO by brainaid.de
DN PARTICULARS
WX Updates:
0430 / 1030 / 1630 / 2230
RANKING: DN - SYC
Race starts: Dec 03rd 15:00 Registration Open!

▶ Flash
GO TO RACE

Christmas Is (Pac) to Christmas Is (Ind) 2022
Two waypoints, start and finish, and between them 5827 NM of two oceans. Not much time if we want to sit at the Christmas Eve table. You will need to maintain an average speed of over 10 knots, so prepare your Volvo70s well and choose the best of the many possible routes. Hands up everyone who knew there were TWO Christmas Islands?! OK, maybe you have sailed this Sailonline course before... but it's time to get ready for the 2022 challenge of racing between Christmas Island in the Pacific to Christmas Island in the Indian Ocean! Please have fun! Fair winds!
Race #1629
INFO by brainaid.de
Volvo70 PARTICULARS
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking: SYC
Race starts: Dec 01st 18:00 Registration Open!

▶ Flash
GO TO RACE

The Three Kings Race 2022
The Three Kings Offshore Race is a 520 nm challenge, in Farr 38s, from Auckland (Orakei) up and around the Three Kings Islands and then back to Auckland finishing where you started. Manawa Islands (Three Kings) are a group of 13 uninhabited islands about 25 nm northwest of Te Rerenga Wairua aka Cape Reinga. They're also about 250nm due north of Auckland, known also as the world's best diving and fishing locations (although hopefully, you won’t be fishing too much during the race, or diving for that matter) and it is just a beautiful yet rugged place that is a must see for anyone who loves the oceans.
Race #1628
INFO by brainaid.de
Farr 38 PARTICULARS
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking: SYC
RACE CLOSE: Tuesday,
December 6 at 2300 UTC.
Race starts: Nov 27th 16:00 Registration Open!

▶ Flash
GO TO RACE

Go to race archive

SYC Ranking

  1. Sailonline Yacht Club Member Pit8008
  2. Sailonline Yacht Club Member WRmirekd
  3. Sailonline Yacht Club Member FreyjaUSA
  4. Sailonline Yacht Club Member bonknhoot
  5. Sailonline Yacht Club Member Kipper1258
  6. Sailonline Yacht Club Member rafa
  7. Sailonline Yacht Club Member Sax747
  8. Sailonline Yacht Club Member Taffarazzi
  9. Sailonline Yacht Club Member HappyHour
  10. Sailonline Yacht Club Member CollegeFund

View full list

Series

Mobile Client

SYC members have the benefit of access to our mobile/lightweight web client!

The mobile client